Here is an example from the `lts` branch computing the product of two
functions
that have different ranges in each:
>>> p = Piecewise((a,abs(x-1)<1),(b,abs(x-2)<2),(c,True))*Piecewise((d,x>1
),(e,True))
>>> piecewise_fold(p)
Piecewise(
(a*d, (x > 1) & (x < 2)),
(b*d, (x > 1) & (x < 4)),
On Wednesday, June 7, 2017 at 5:49:34 PM UTC-4, Aaron Meurer wrote:
>
>
>
> >
> > My thoughts on Piecewise is that it's trying to do too many things.
> There's
> > a difference between representing a function whose form changes
> depending on
> > the value of its argument (in my case, t) an
On Wed, Jun 7, 2017 at 3:12 PM, wrote:
> BTW, when I'm demonstrating sympy to people, I show them we can test our
> preferred form for equality. (Sympy is handy for verifying hand
> calculations or standard formulas found in books.)
>
> h = integrate(f.subs(x,tau)*g.subs(x,t-tau), (tau,0,t))
> s
BTW, when I'm demonstrating sympy to people, I show them we can test our
preferred form for equality. (Sympy is handy for verifying hand
calculations or standard formulas found in books.)
h = integrate(f.subs(x,tau)*g.subs(x,t-tau), (tau,0,t))
simplify(h.args[1][0] - (exp(-b*t)-exp(-a*t))/(a-b)
On Wed, Jun 7, 2017 at 11:35 AM, wrote:
> I'm trying to write a generic function to convolve two functions (in one
> dimension, for now) and came across a few issues I don't know how to solve.
> Rather than give up, maybe I can start a discussion. Some Sympy follows:
>
> a , b = symbols('a b', p
I'm trying to write a generic function to convolve two functions (in one
dimension, for now) and came across a few issues I don't know how to solve.
Rather than give up, maybe I can start a discussion. Some Sympy follows:
a , b = symbols('a b', positive=True)
f = exp(-a*x)
g = exp(-b*x)
integr
