And I guess there's a similar rational for simplifying asin(sin(x)) to x?
This one seems harder to justify since, for example, asin(sin(10))
is -0.575222039230620 which is obviously not equal to 10.
On Tuesday, October 17, 2017 at 5:08:32 PM UTC-7, EKW wrote:
>
> >>> from sympy import *
> >>> x = Symbol('x')
>
> >>> p = (x**2 + x) / ((x - 1)*(x + 1))
> >>> print(p)
> (x**2 + x)/((x - 1)*(x + 1))
> >>> p = simplify(p)
> >>> print(p)
> x/(x - 1)
>
>
> This simplification is only valid for x != -1, and I haven't specified any
> restrictions on the range of x. Was this done on purpose, and if so why?
>
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