s=t2*f(sin(t)),求s' (求导)

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s=t2*f(sin(t)),求s' (求导)
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s=t2*f(sin(t)),求s' (求导)
s=t2*f(sin(t)),求s' (求导)

s=t2*f(sin(t)),求s' (求导)
s'(t)=2t*f(sin(t))+t2*f'(sin(t))*cos(t)