I don't how to start with this kind of problem. Can someone show me the solution for this one.
Find the first derivative
sin^2(sin(sin x))
Just in case a picture helps...
... where (key in spoiler) ...
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Alternatively...
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Don't integrate - balloontegrate!
Balloon Calculus; standard integrals, derivatives and methods
Balloon Calculus Drawing with LaTeX and Asymptote!