No. the technique used by this is "derivative divides".
Integrate U*V by seeing if dU/dx divides V. It does. Integral is U^2/2.
U=sin
V=cos
one has to take care of constant factors too.
Substitution as taught "by hand" is not needed.
RJF
Yigal Weinstein wrote:
>Does the algorithm in Maxima use something like substitution as used by
>hand?
>y= cos(x) or sin(x)
>=> dy = -sin(x)dx or cos(x)dx
>=> I(x)=integrate(sin(x)*cos(x),x) = -cos^2(x) or sin^2(x)?
>Or does substitution not factor in at all?
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