Dear all,
How can I get sage to solve a simple equation such as the one below?
----------------------------------------------------------------------
| Sage Version 4.0.2, Release Date: 2009-06-18 |
| Type notebook() for the GUI, and license() for information. |
----------------------------------------------------------------------
sage: var('x y n')
(x, y, n)
sage: solve(y == x^n,x)
---------------------------------------------------------------------------
TypeError Traceback (most recent call
last)
[...]
TypeError: Computation failed since Maxima requested additional
constraints (try the command 'assume(>0)' before integral or limit
evaluation, for example):
Is n an integer?
MMA solves similar equation using inverse functions and spits out a
warning, no matter whether n is an integer or not. I thought that
Maxima would do the same as stated in the docu.
Here is an excerpt from the Maxima 5_15 docu:
"Let E be the expression and X be the variable. If E is linear in X
then it is trivially solved for X. Otherwise if E is of the form A*X^N
+ B then the result is (-B/A)^1/N) times the N'th roots of unity."
Is this a problem with the sage->maxima interface? I also wanted to
try Sympy as suggested in another post, but Sympy does not seem to be
included in the new version of sage any more. Am I misunderstanding
something?
Thanks for your help!
Stan
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