Thank you!
On Tuesday, May 23, 2023 at 4:21:29 PM UTC+3 Oscar wrote:
> On Tue, 23 May 2023 at 06:51, Paul Royik wrote:
> >
> > How do I simplify the following expressions: i**(-2*i), (-i)**(-2*i),
> ((-sqrt(3) - i)/2)**(-2*i), ((sqrt(3) - i)/2)**(-2*i) ?
> >
> >
How do I simplify the following expressions: i**(-2*i), (-i)**(-2*i),
((-sqrt(3) - i)/2)**(-2*i), ((sqrt(3) - i)/2)**(-2*i) ?
Is there any built-in function?
For example, i**(-2*i) should give e^pi and ((sqrt(3) - i)/2)**(-2*i)
should give e^(-pi/3).
Thank you.
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Thanks to all!
On Friday, April 28, 2023 at 9:31:21 AM UTC+3 emanuel.c...@gmail.com wrote:
> BTW :
> >>> x, y = symbols("x, y") >>> P = 360*x*y**71*(y**72 - 1)**4 + 360*x**4
> *(x**5 - 1)**7 >>> P.args (360*x**4*(x**5 - 1)**7, 360*x*y**71*(y**72 - 1
> )**4) >>> P.func.make_args(P)
Hello.
How can I get all unexpanded coeffs of a polynomial?
For example, Poly(360*x*y**71*(y**72 - 1)**4 + 360*x**4*(x**5 - 1)**71,
x).all_coeffs() should return [360*y**71*(y**72 - 1)**4, 360*x**4*(x**5 -
1)**71], but, instead, it returns expanded long expression.
How to avoid this and
Thank you very much!
On Saturday, January 21, 2023 at 5:28:51 PM UTC+2 Oscar wrote:
> On Sat, 21 Jan 2023 at 15:24, Paul Royik wrote:
> >
> > Thank you very much for the response.
> > Is there any other ways without evaluate=False?
> > What about def _parse_order(cls
Thank you very much for the response.
Is there any other ways without evaluate=False?
What about def _parse_order(cls, order): function?
Can I specify a custom order?
On Saturday, January 21, 2023 at 4:36:58 PM UTC+2 Oscar wrote:
> On Fri, 13 Jan 2023 at 11:10, Paul Royik wrote:
> >
Hello.
Is it possible to render cos ^2 (x)- sin ^2 (x) as "cos ^2 (x)- sin ^2
(x)", not "- sin ^2 (x)+cos^2(x)"? I want terms with negative sign be last.
I've discovered that there is def _print_Add(self, expr, order=None):
How should order be specified?
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Hello, I'm interesting in integration, limit, series algorithms.
On Monday, February 21, 2022 at 5:06:59 AM UTC+2 syle...@gmail.com wrote:
> Hello, I am verified sympy contributor and currently working as a math
> engine developer for Mathpresso, inc.
> I have 2 years of experience of working
I'm developing a step-by-step math solver for students, like Symbolab or
MathWay.
I use SymPy.
And I need a person to help me write algorithms for certain problems:
limits, equation solving, integration, series etc.
I wonder whether here are people that could be hired for this job.
This is a
Is there a funciton that can simplify (to write as short as possible, the
smallest number of operations) a boolean expression?
ABC + A~B~C+~AB~C+~A~BC should be simplified to A xor B xor C.
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In any expression, how to factor a constant (that doesn't depend on certain
symbols)?
For example (-2xy+2).factor_function(x,y) should give 2, (1-xy).
as_coeff_mul doesn't work.
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do want just a specific term, your best bet is
> to use series(), as this works quite well on polynomials without
> expanding them.
>
> Aaron Meurer
>
> On Mon, Nov 22, 2021 at 8:14 AM Paul Royik wrote:
> >
> > Thank you. Yes, in some cases I just need a degree or a leading
], 'Symbol')
result.append((OP, '*'))
Is there any reason to substitute a Function with a Symbol?
On Monday, November 22, 2021 at 9:00:13 AM UTC+2 Paul Royik wrote:
> I want to parse something like `f(x) - 2 sin 3x`.
>
> If I use `parse_expr` without `implicit_multiplication_application`, then
Thank you. Yes, in some cases I just need a degree or a leading term.
On Monday, November 22, 2021 at 3:34:17 PM UTC+2 Oscar wrote:
> On Mon, 22 Nov 2021 at 09:18, Paul Royik wrote:
> >
> > `(x-2)**9000` takes much time, but `(x-6)**100*(2-x)**9000` takes
> forever.
>
`(x-2)**9000` takes much time, but `(x-6)**100*(2-x)**9000` takes forever.
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Thanks to all!
On Sunday, November 21, 2021 at 6:35:06 PM UTC+2 Paul Royik wrote:
> Just to print it.
>
> On Sunday, November 21, 2021 at 12:25:16 PM UTC+2 smi...@gmail.com wrote:
>
>> Internally, Poly will expand it. It would be possible to make a printer
>> th
I want to parse something like `f(x) - 2 sin 3x`.
If I use `parse_expr` without `implicit_multiplication_application`, then
`f(x)` is parsed correctly, but not `2 sin 3x`.
If I include `implicit_multiplication_application`, then `f(x)` is parsed
as `fx`.
Is this a bug?
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Just to print it.
On Sunday, November 21, 2021 at 12:25:16 PM UTC+2 smi...@gmail.com wrote:
> Internally, Poly will expand it. It would be possible to make a printer
> that prints the expression in factored form, however. But why do you want
> to do that? What is the goal/problem?
>
> /c
>
>
Poly((x-1)**2, x) returns Poly(x**2-2x+1, x).
Is it possbile to retain the expression as it is, i.e. (x-1)**2 ?
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ot; string, no need to escape
>
> BR Oscar
>
>
> Den tis 28 sep. 2021 kl 16:15 skrev Paul Royik :
>
>> I'm trying to create a symbol, where both alpha and beta are in subscript.
>> Symbol('x_{\alpha \beta}') doesn't work.
>>
>> --
>> You received this messag
I'm trying to create a symbol, where both alpha and beta are in subscript.
Symbol('x_{\alpha \beta}') doesn't work.
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Thanks to everybody!
On Monday, September 13, 2021 at 3:56:47 PM UTC+3 Oscar wrote:
> Think about things that are literally not numbers:
>
> In [9]: Interval(1, 2).is_number
> Out[9]: False
>
> In [10]: ImmutableMatrix([[1, 2], [3, 4]]).is_number
> Out[10]: False
>
>
> On Mon, 13 Sept 2021 at
Are there any cases when f.is_number != (not bool(f.free_symbols))?
If I have an arbitrary expression, what is the correct way to check whether
it has variables?
Thank you.
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Is there a package inside sympy for finding extrema of a multivariable
function (numerically and exactly)?
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For a given number, I want to approximate it to 5 decimal points.
If a number of digits in the integer part is greater than 7, then round to
7 significant figures.
What I noticed is that evalf doesn't approximate to decimal points, it
evaluates to significant figures.
What should I apply to
I want to parse logic implication `p->q`. What should I add to global_dict,
so that parse_expr parsed it?
I know, that SymPy doesn't have and Implication class. I will create it by
myself, but `global_dict = {'->': Implication}` doesn't work.
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> On Sat, Jun 5, 2021 at 11:11 PM Paul Royik wrote:
> >
> > Why S.Infinity.is_number (as well as S.ComplexInfinity.is_number) is
> True and S.NaN.is_number is True, while sin(S.Infinity) (i.e. AccumBounds)
> is False?
> >
> > I just can't understand what is
Why S.Infinity.is_number (as well
as S.ComplexInfinity.is_number) is True and S.NaN.is_number is True,
while sin(S.Infinity) (i.e. AccumBounds) is False?
I just can't understand what is_number means in SymPy.
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Thank you!
On Tuesday, May 11, 2021 at 3:12:18 PM UTC+3 jks...@gmail.com wrote:
> >>> from sympy import Indexed, IndexedBase, Idx, symbols
> >>> i, j = symbols('i j', cls=Idx)
> >>> Aij = Indexed('A', i, j)
> >>> Aij.is_symbol
> True
> >>> Aij.is_Symbol
> False
>
> Aij is not a Symbol but it can
Got it!
On Tuesday, May 11, 2021 at 3:12:18 PM UTC+3 jks...@gmail.com wrote:
> >>> from sympy import Indexed, IndexedBase, Idx, symbols
> >>> i, j = symbols('i j', cls=Idx)
> >>> Aij = Indexed('A', i, j)
> >>> Aij.is_symbol
> True
> >>> Aij.is_Symbol
> False
>
> Aij is not a Symbol but it can be
What are the cases when one is True, while another is False?
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;>> str(float). Some split() and strip() operations should get you want
>>> you want, or just use a regex.
>>>
>>> Aaron Meurer
>>>
>>> On Thu, Apr 15, 2021 at 11:56 PM Paul Royik wrote:
>>> >
>>> > One digit. Ignore scienti
just use a regex.
>
> Aaron Meurer
>
> On Thu, Apr 15, 2021 at 11:56 PM Paul Royik wrote:
> >
> > One digit. Ignore scientific notation.
> >
> > On Friday, April 16, 2021 at 1:23:53 AM UTC+3 asme...@gmail.com wrote:
> >>
> >> How would you coun
One digit. Ignore scientific notation.
On Friday, April 16, 2021 at 1:23:53 AM UTC+3 asme...@gmail.com wrote:
> How would you count small numbers like 1.1e-30. Is that 1 digit or 31
> digits after the decimal?
>
> Aaron Meurer
>
> On Thu, Apr 15, 2021 at 2:31 PM
Rational(1,2).evalf(), how do I get 1 here (since 0.5 has 1 digit after the
dot)?
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F = Function('F')
x, y = symbols('x y')
How to write F(x)(y)?
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r=order)
>
> Aaron Meurer
>
> On Thu, Mar 25, 2021 at 9:43 AM Paul Royik wrote:
> >
> > Also, what is the best way to set a color? Setting color in args is not
> a very good idea, as color is a string.
> >
> > On Thursday, March 25, 2021 at 4:06:42 PM U
Thank you. Didn't notice that!
On Thursday, March 25, 2021 at 9:58:17 PM UTC+2 Oscar wrote:
> On Thu, 25 Mar 2021 at 19:51, Paul Royik wrote:
> >
> > This is a code for fuzzy_and:
> > rv = True
> > for ai in args:
> > ai = fuzzy_bool(ai)
> > if
This is a code for fuzzy_and:
rv = True
for ai in args:
ai = fuzzy_bool(ai)
if ai is False:
return False
if rv: # this will stop updating if a None is ever trapped
rv = ai
return rv
Is there any reason why None is not immediately returned?
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What should I set if I want to show numbers n, such that abs(n)<10**-11
with exponent?
I can't set negative infinity here.
On Wednesday, March 24, 2021 at 9:04:51 PM UTC+2 Paul Royik wrote:
> Thank you.
>
> On Wednesday, March 24, 2021 at 8:59:22 PM UTC+2 asme...@gmail.com wrote:
Also, what is the best way to set a color? Setting color in args is not a
very good idea, as color is a string.
On Thursday, March 25, 2021 at 4:06:42 PM UTC+2 Paul Royik wrote:
> I want to create a class that makes expression colored.
> class Colored(Expr):
> pass
>
> How do
I want to create a class that makes expression colored.
class Colored(Expr):
pass
How do I make Colored behave exactly as its arg, when I sort args?
(x+Colored(2)).as_ordered_terms() should give the same as
(x+2).as_ordered_terms()
(x*Colored(y)).as_ordered_factors() should give the same as
; On Thu, Mar 25, 2021 at 1:18 AM Paul Royik wrote:
> >
> > from sympy.printing.precedence, PRECEDENCE
> > precedence(-x) == PRECEDENCE['Add']
> > It gives True.
> >
> > On Wednesday, March 24, 2021 at 10:36:52 PM UTC+2 asme...@gmail.com
> wrote:
> &g
ut this is only because it converts them both to that canonical form.
>
> Aaron Meurer
>
> On Wed, Mar 24, 2021 at 2:13 PM Paul Royik wrote:
> >
> > Is there any reason why precedence of -x equals precedence of Add?
> > -x is (-1)*x
> >
> > --
> &g
Is there any reason why precedence of -x equals precedence of Add?
-x is (-1)*x
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Thank you.
On Wednesday, March 24, 2021 at 8:59:22 PM UTC+2 asme...@gmail.com wrote:
> You can use the min and max flags to the printer function (like sstr()
> or pprint() or latex()). They set the minimum and maximum values to
> print as fixed point. You can use min=-float('inf'),
How can I print Float(0.5) as it is without exponent?
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And why one needs both these methods?
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Great! Thank you.
But expr.is_zero always implies, that simplified expr equals 0. Correct?
On Friday, March 19, 2021 at 3:51:31 PM UTC+2 Oscar wrote:
> On Fri, 19 Mar 2021 at 13:19, Paul Royik wrote:
> >
> > Is there a difference between checking b.is_zero or
Is there a difference between checking b.is_zero or b == 0?
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In StrPrinter there is
def emptyPrinter(self, expr):
if isinstance(expr, str):
return expr
elif isinstance(expr, Basic):
return repr(expr)
else:
return str(expr)
Is `return repr(expr)` reachable if `StrPrinter` defines `_print_Basic`
that prints all `Basic` objects?
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I just want to understand what is the best configuration to use? With more
CPUs or memory?
Thank you.
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SymPy can have issues with things like
> pickle sometimes.
>
> Aaron Meurer
>
> On Wed, Aug 12, 2020 at 4:39 AM Paul Royik > wrote:
> >
> > Can SymPy run inside a Celery task?
> >
> > On Saturday, August 8, 2020 at 11:51:13 PM UTC+3, Aaron Meurer wr
ings like
> pickle sometimes.
>
> Aaron Meurer
>
> On Wed, Aug 12, 2020 at 4:39 AM Paul Royik > wrote:
> >
> > Can SymPy run inside a Celery task?
> >
> > On Saturday, August 8, 2020 at 11:51:13 PM UTC+3, Aaron Meurer wrote:
> >>
> >> I
gt; On Wed, Aug 12, 2020 at 4:39 AM Paul Royik > wrote:
> >
> > Can SymPy run inside a Celery task?
> >
> > On Saturday, August 8, 2020 at 11:51:13 PM UTC+3, Aaron Meurer wrote:
> >>
> >> I wouldn't recommend using threads with SymPy. Even if it
t from truly working concurrently.
> Instead, use different processes.
>
> Aaron Meurer
>
> On Sat, Aug 8, 2020 at 2:32 PM Paul Royik > wrote:
> >
> > If sympy is run in multi-threaded environment, like apache, is it safe?
> Does cache require special handlin
Can sympy run in side celery task?
On Sunday, August 9, 2020 at 10:14:30 PM UTC+3, Paul Royik wrote:
>
> Thank you.
>
> On Saturday, August 8, 2020 at 11:51:13 PM UTC+3, Aaron Meurer wrote:
>>
>> I wouldn't recommend using threads with SymPy. Even if it works (which
>
> 4.257142857142857
> >>> Rational(str((Integer(149)/35).evalf(16)))
> 4257142857142857/1000
>
> Aaron Meurer
>
> On Mon, Aug 10, 2020 at 1:56 PM Paul Royik > wrote:
> >
> > nsimplify((Integer(149)/25).evalf()) outputs 149.25, as expected
&g
nsimplify((Integer(149)/25).evalf()) outputs 149.25, as expected
nsimplify((Integer(149)/35).evalf()) outputs 149/35, which is not expected
as it is repeating decimal.
How to make it perform approximation to given precision:
4257142857142857/10**15 ?
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Seems like they do the same thing or no?
In printing _coeff_isneg is used, in other
packages could_extract_minus_sign.
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concurrently.
> Instead, use different processes.
>
> Aaron Meurer
>
> On Sat, Aug 8, 2020 at 2:32 PM Paul Royik > wrote:
> >
> > If sympy is run in multi-threaded environment, like apache, is it safe?
> Does cache require special handling?
> >
> &g
h user so that it isn't really
> running SymPy in a multi-threaded environment.
>
> On Sat, 8 Aug 2020 at 16:09, Paul Royik >
> wrote:
> >
> > If a couple of users use sympy at the same time (like live.sympy.org),
> is it considered safe?
> > What about cache
If a couple of users use sympy at the same time (like live.sympy.org), is
it considered safe?
What about cache?
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Got it. Thanks.
On Sunday, August 2, 2020 at 12:00:47 PM UTC+3, Oscar wrote:
>
> On Sun, 2 Aug 2020 at 06:32, Paul Royik >
> wrote:
> >
> > Do you mean that now it is not safe to use evaluate=True in one thread
> and evaluate=False in another?
>
> It is alway
Do you mean that now it is not safe to use evaluate=True in one thread and
evaluate=False in another?
On Saturday, August 1, 2020 at 10:40:19 PM UTC+3, Oscar wrote:
>
> On Sat, 1 Aug 2020 at 18:40, Paul Royik >
> wrote:
> >
> > In sympy.core.parameters it is written
In sympy.core.parameters it is written that "WARNING! Although the global
parameters are thread-local, SymPy's cache is not by now. This may lead to
undesired result in multi-threading operations."
But in code I see
def __setattr__(self, name, value):
if getattr(self, name) != value:
What does this flag control?
factor(2**(x**2 + 2*x + 1)) is not factored
factor(sqrt(x**2 + 2*x + 1)) is factored
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and powsimp() with the
> force=True flag.
>
> Aaron Meurer
>
> On Fri, Jan 17, 2020 at 12:26 PM Paul Royik > wrote:
> >
> > I know that variables can be made positive or negative.
> >
> > But how do I make assumption that x>2?
> >
> > If I ha
I know that variables can be made positive or negative.
But how do I make assumption that x>2?
If I have and expression like (x-2)^(1/3)+(x-5)^(1/3) (actually arbitrary
expressions), how to make assumptions that all expressions under roots are
positive, i.e. x-2>0, x-5>0?
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I'm trying to simplify a*cos(b)**2+a*sin(b)**2 to a
So, I write
a = sympy.Wild('a')
b = sympy.Wild('b')
expr = 49*cos(x)**2+49*sin(x)**2 + 5
expr.replace(a*sympy.sin(b)**2+a*sympy.cos(b)**2, a, exact=True)
But this doesn't work. expr is unchanged.
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nd(f.get((k,), K.zero))
949
950 return dup_strip(h)
On Monday, November 23, 2015 at 9:03:10 PM UTC+2, Aaron Meurer wrote:
>
> What are the different results that you get? And how is b defined (are
> there any assumptions on it)?
>
> Aaron Meurer
>
> On Mon, No
Nov 23, 2015 at 12:56 PM, Paul Royik <distan...@gmail.com
> > wrote:
> > minimal script is simplify(3*b**(1/Integer(3))-3, fu=True)
> >
> > On Monday, November 23, 2015 at 8:53:45 PM UTC+2, Ondřej Čertík wrote:
> >>
> >> Is it running the
m/sympy/sympy/wiki/Faq#how-do-i-clear-the-cache
>
> Send a minimal script that hangs, and we can try it on different
> computers and see if we can reproduce the issue. Then we'll go from
> there.
>
> Ondrej
>
> On Mon, Nov 23, 2015 at 10:55 AM, Paul Royik <distan..
I noticed this issue with simplify function.
Is this possible?
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Python 2.7, last version of sympy.
Code is absolutely the same.
How to detect hardware difference? How to clear cache?
What info should I post?
On Monday, November 23, 2015 at 7:42:58 PM UTC+2, Ondřej Čertík wrote:
>
> On Mon, Nov 23, 2015 at 10:31 AM, Paul Royik <distan...@gmail.com
> create a list with 333 elements. This is going to fail no
> matter what machine you run it on. This is really an issue with SymPy
> (it should be using a sparse representation).
>
> Aaron Meurer
>
> On Mon, Nov 23, 2015 at 1:57 PM, Paul Royik <distan...@gmail
OK. Thanks.
On Monday, November 9, 2015 at 12:42:51 PM UTC+2, Mateusz Paprocki wrote:
>
> Hi,
>
> On 9 November 2015 at 09:49, Paul Royik <distan...@gmail.com >
> wrote:
> > In Mul class I see this piece of code:
> >
> > def _eval_is_real(self):
&g
In Mul class I see this piece of code:
def _eval_is_real(self):
real = True
zero = one_neither = False
for t in self.args:
if not t.is_complex:
return t.is_complex
Don't understand last two lines. How is it possible that if t is not
(replace -1 with whatever value you want to replace). A "cleaner"
> solution would be to create a custom Pow subclass that evaluates like
> you want, and replace instances of Pow with your class before doing a
> substitution.
>
> Aaron Meurer
>
> On Wed, Nov
>
> Aaron Meurer
>
> On Fri, Nov 6, 2015 at 1:42 PM, Paul Royik <distan...@gmail.com
> > wrote:
> > I decided to use "cleaner" solution: create a custom Pow subclass that
> > evaluates. What method should I override?
> >
> > On Wed
tom Pow subclass that evaluates like
> you want, and replace instances of Pow with your class before doing a
> substitution.
>
> Aaron Meurer
>
> On Wed, Nov 4, 2015 at 1:19 PM, Paul Royik <distan...@gmail.com
> > wrote:
> > So, there is no way to do it us
> Out[3]: -1
>
> In [4]: real_root(-1, 3)**2
> Out[4]: 1
>
> SymPy, like most math libraries, uses complex roots (i.e., principal
> roots) because they have nicer mathematical properties.
>
> Aaron Meurer
>
> On Wed, Nov 4, 2015 at 3:30 AM, Paul Royik <distan...
I have the following expresssion:
f=x**(Rational(2,3))
How can I get 1, when substituting (-1) instead of complex number?
For now, I got complex number when run f.subs(x,-1).evalf()
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simplify(2log(5)) returns log(25)
How to revert this?
On Monday, October 19, 2015 at 10:35:45 AM UTC+3, Francesco Bonazzi wrote:
>
>
>
> On Monday, 19 October 2015 07:12:46 UTC+2, Paul Royik wrote:
>>
>> Hello.
>> I noticed that simplify moves coefficient of logarith
s:
>
> In [6]: l = log(25)
>
> In [7]: l.replace(lambda expr: isinstance(expr, log), lambda expr: factor(
> expr))
> Out[7]: 2*log(5)
>
>
>
> On Monday, 19 October 2015 11:32:34 UTC+2, Paul Royik wrote:
>>
>> simplify(2log(5)) returns log(25)
>> How to re
I see this error when try to calculate limit of (-1)^x /sqrt(x) as x
approaches infinity.
Can somebody explain me what is the problem here?
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Thank you.
On Monday, September 7, 2015 at 10:52:12 AM UTC+3, Kalevi Suominen wrote:
>
>
>
> On Monday, September 7, 2015 at 9:37:58 AM UTC+3, Paul Royik wrote:
>>
>> I see this error when try to calculate limit of (-1)^x /sqrt(x) as x
>> approaches infinity.
&
Cache is cleared every request.
On Saturday, August 1, 2015 at 2:11:12 PM UTC+3, Denis Akhiyarov wrote:
Have you checked caching in sympy? I have to force clean the sympy cache
for long-term simulations.
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Again I'm asking about mod_wsgi.
I'm running some sort of webservice that uses sympy.
Site is running under apache mod_wsgi.
Users access it an everything is fine.
But sometimes when I access the page, it loads too long (even simple
example).
It looks like memory used and another query just
It never happens on the development server.
On Saturday, July 25, 2015 at 6:36:42 AM UTC+3, Sudhanshu Mishra wrote:
Hi,
Does it happen on development server too?
On Jul 25, 2015 1:39 AM, Paul Royik distan...@gmail.com javascript:
wrote:
Again I'm asking about mod_wsgi.
I'm running some
Thank you.
On Tuesday, July 14, 2015 at 11:10:38 PM UTC+3, Aaron Meurer wrote:
The printer has an option to do this. Use sstr() and set the full_prec
flag.
Aaron Meurer
On Tue, Jul 14, 2015 at 2:53 PM, Paul Royik distan...@gmail.com
javascript: wrote:
str(a).rstrip('0') trick won't
str(a).rstrip('0') trick won't won't work with complex numbers, like
0.3+0.500i
On Monday, July 13, 2015 at 7:08:27 PM UTC+3, Vinzent Steinberg wrote:
On Sunday, July 12, 2015 at 6:18:26 PM UTC+2, Paul Royik wrote:
Is it possible to set for float precision of 50
Is it possible to set for float precision of 50, but to cut trailing zeros
for finite decimals?
a=Float('0.5',prec=50)
print a/7
Output: 0.071428571428571428571428571428571428571428571428571
a=Float('0.5',prec=50)
print a
Output: 0.50 (but I want
But this can't be reproduced.
It is a bug from time to time.
How can this be possible?
On Friday, July 10, 2015 at 1:49:56 AM UTC+3, Aaron Meurer wrote:
This looks like a bug. Numerical values should be evaluated in
inequalities.
Aaron Meurer
On Thu, Jul 9, 2015 at 5:23 PM, Paul Royik
:
Is there a traceback with the error? Is it coming from SymPy code or
your own code?
Aaron Meurer
On Thu, Jul 9, 2015 at 12:40 AM, Paul Royik distan...@gmail.com
javascript: wrote:
I'm using sympy on my site together with django and mod_wsgi.
From time to time (i.e. this error
And another one:
File /home/mysite/lib/python2.7/sympy/core/relational.py, line 103, in
__nonzero__
raise TypeError(cannot determine truth value of\n%s % self)
TypeError: cannot determine truth value of
3*pi/8 = 7*pi/8
On Friday, July 10, 2015 at 1:12:06 AM UTC+3, Paul Royik wrote
I'm using sympy on my site together with django and mod_wsgi.
From time to time (i.e. this error is not reproducible) I've got the
following error:
TypeError: cannot determine truth value of
3*pi/8 = 7*pi/8
In other words, error is raised when I try to compare numerical values.
Can someone
OK.
Thanks.
On Friday, July 3, 2015 at 2:47:19 PM UTC+3, Kalevi Suominen wrote:
On Friday, July 3, 2015 at 1:58:06 PM UTC+3, Paul Royik wrote:
I want to calculate inverse laplace of e^(-2s) which is dirac(t-2), but
sympy gives unevaluated.
It is currently not possible to compute
I want to calculate inverse laplace of e^(-2s) which is dirac(t-2), but
sympy gives unevaluated.
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limit(sin(x)**15,x,0,'+') works
limit(sin(x)**15,x,0,'-') hangs
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