| Author |
Comment/Response |
Helmut
|
 09/30/10 04:29am
Hi all,
I've got some trouble right now with complex numbers ! A combination of Assuming[] and Re[] doesn't provide the answer expected.
input :
f[z_] := z/Sqrt[z^2 - a^2]
ff = f[x1]
fff = Assuming[
Element[a, Reals] && Element[x1, Reals] && a > 0 && x1 > 0 &&
x1 > a, Re[ff]]
which leads to :
Re[x1/Sqrt[-a^2 + x1^2]]
where the expected answer is :
x1/Sqrt[-a^2 + x1^2]
Has anybody an idea about how Mathematica should be handled ?
Thanks,
Helmut
URL: , |
|
