On Tuesday, April 26, 2016 at 7:41:44 AM UTC-7, Laurent Decreusefond wrote:
>
>
> What does mean log(-1+e^(-2*t)) since the argument is negative ?
>
For t<0 that expression takes real values, so there the answer even makes
sense in a real setting. The answer is generally correct for complex
On Jun 26, 5:07 pm, Loïc xl...@free.fr wrote:
Hello list,
I found a problem with integrate, look at the following sequence:
sage: integrate(sin(x)/(cos(x))^2,x)
1/cos(x)
It's ok -
Now I try to add an interval:
sage: integrate(cos(x)/(sin(x))^2,x,pi/6,pi/4)
