Le 17/03/2015 16:19, Sarfo a écrit :
I computed some derivative using three CAS: Sage, Mathematica and
Maple. But Mathematica's result was different from the rest.
I compared Mathematica's result with the rest and realised,
Mathematica's computation was wrong. See attached Pictures
I am not here to defend Mathematica, but it seems that the result is
actually right, simply in another form:
sage: f(x) = sin(x)*tan(x)^2+2*sin(x)
sage: g(x) = sec(x)*tan(x)+sin(x)
sage: bool(f(x) == g(x))
True
Cheers,
Bruno
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