[sage-support] Re: About exp (a)^b

2009-09-17 Thread Francois Maltey
kcrisman wrote : On Sep 16, 4:04 pm, Francois Maltey fmal...@nerim.fr wrote: I play with sage, exp, sin, cos, sinh, and co... var(a,b,c) exp(a)^2 # returns exp(2a) is right exp(a)^(1/2) # returns exp (a/2) is wrong, with a=2*i*pi we get -1=1 exp(a)^b # returns exp(a*b) is wrong

[sage-support] solve error

2009-09-17 Thread geir egeland
Hi, I am trying to solve the following equation: sage: f(x)=((1-0.15)/(1-0.15+(0.15/(1-x*0.15)^22)))^3-x sage: solve(f,x) This gives me the following error, which doesn't make much sense to me. --- TypeError

[sage-support] Re: solve error

2009-09-17 Thread x x
I am trying to solve the following equation: sage: f(x)=((1-0.15)/(1-0.15+(0.15/(1-x*0.15)^22)))^3-x Hi, When writing 15/100 instead 0.15 it outputs: [x == 0.302350301169, x == (0.67362336338 + 0.678659962463*I), x == (0.67362336338 - 0.678659962463*I)] Although solve only accepts from

[sage-support] Re: About exp (a)^b

2009-09-17 Thread kcrisman
On Sep 17, 5:14 am, Francois Maltey fmal...@nerim.fr wrote: kcrisman wrote : On Sep 16, 4:04 pm, Francois Maltey fmal...@nerim.fr wrote: I play with sage, exp, sin, cos, sinh, and co... var(a,b,c) exp(a)^2 # returns exp(2a) is right exp(a)^(1/2) # returns exp (a/2) is wrong, with

[sage-support] Re: solve error

2009-09-17 Thread kcrisman
On Sep 17, 8:47 am, x x niels.lub...@gmail.com wrote: I am trying to solve the following equation: sage: f(x)=((1-0.15)/(1-0.15+(0.15/(1-x*0.15)^22)))^3-x Hi, When writing 15/100 instead 0.15 it outputs: [x == 0.302350301169,  x == (0.67362336338 + 0.678659962463*I),  x ==

[sage-support] Re: About exp (a)^b

2009-09-17 Thread Burcin Erocal
On Thu, 17 Sep 2009 06:22:35 -0700 (PDT) kcrisman kcris...@gmail.com wrote: On Sep 17, 5:14 am, Francois Maltey fmal...@nerim.fr wrote: kcrisman wrote : On Sep 16, 4:04 pm, Francois Maltey fmal...@nerim.fr wrote: I play with sage, exp, sin, cos, sinh, and co... var(a,b,c)

[sage-support] Re: max and min evaluating symbolic expressions too soon

2009-09-17 Thread Burcin Erocal
On Wed, 16 Sep 2009 08:16:56 -0700 (PDT) kcrisman kcris...@gmail.com wrote: Might there be a way to do something that doesn't conflict with the builtin max function in the same way as the (nearly reviewed) #3587 seems to avoid conflict with the builtin sum function? This would be pretty

[sage-support] Re: graphics broken in 10.6?

2009-09-17 Thread Gary
Wow, I can't believe so few have reported this problem. Really I've nothing new to add other than solidarity -- I got this same error when I tried it two weeks ago. One difference in my setup is that I installed Snow Leopard fresh into a new partition instead of upgrading an existing Leopard.

[sage-support] Re: Elliptic Curves

2009-09-17 Thread Tipoy
Actually, I wonder if there is some list of the usual commands to use on Elliptic Curves. I've been searching for it, but I only found the commands to define an Elliptic Curve (just over Q or a finite field, but not over a function field, say Q(t) for example) and operate with some of points in

[sage-support] Re: Elliptic Curves

2009-09-17 Thread Craig Citro
Actually, I wonder if there is some list of the usual commands to use on Elliptic Curves. I've been searching for it, but I only found the commands to define an Elliptic Curve (just over Q or a finite field, but not over a function field, say Q(t) for example) and operate with some of points

[sage-support] derivative function

2009-09-17 Thread Dan Aldrich
y=|x| 1st derivative should be +1 x0 and -1,X0 f(x) = abs(x) Dx = x.derivative() p1 = plot (f(x),(-5,5),color='black') p2 = plot (Dx, (0,5),color = 'red') p3 = plot (Dx, (-5,0),color = 'blue') show (p1+p2+p3) -d --~--~-~--~~~---~--~~ To post to this group,

[sage-support] Re: Elliptic Curves

2009-09-17 Thread Tipoy
Ok, that's very helpful. Thank you very much. Best regards. On 17 sep, 15:26, Craig Citro craigci...@gmail.com wrote: Actually, I wonder if there is some list of the usual commands to use on Elliptic Curves. I've been searching for it, but I only found the commands to define an Elliptic

[sage-support] Re: Elliptic Curves

2009-09-17 Thread Tipoy
Ok, thank you very much. That's very helpful. Best regards. On 17 sep, 15:26, Craig Citro craigci...@gmail.com wrote: Actually, I wonder if there is some list of the usual commands to use on Elliptic Curves. I've been searching for it, but I only found the commands to define an Elliptic

[sage-support] Re: derivative function

2009-09-17 Thread Burcin Erocal
On Thu, 17 Sep 2009 13:29:01 -0400 Dan Aldrich daldr...@earthlink.net wrote: y=|x| 1st derivative should be +1 x0 and -1,X0 f(x) = abs(x) Dx = x.derivative() This should be Dx = f.derivative(x) In your example Dx is 1, and the graph is correct. p1 = plot (f(x),(-5,5),color='black')

[sage-support] Folders Projects in Sage Notebook GUI

2009-09-17 Thread kex
Hi, I would like to organize my worksheets, like having projects or folders would be nice 20090917Homework#1 this would be the folder name or the project name Worksheet #1 drawingcurves Worksheets in above project Worksheet

[sage-support] Re: Folders Projects in Sage Notebook GUI

2009-09-17 Thread William Stein
2009/9/17 kex boris.fo...@gmail.com: Hi, I would like to organize my worksheets, like having  projects or folders would be nice 20090917Homework#1                                 this would be the folder name or the project name        Worksheet #1 drawingcurves