y=f(-x^3)求dy
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y=f(-x^3)求dy
y=f(-x^3)求dy
y=f(-x^3)求dy
dy=[f'(-x^3)]*(-x^3)'dx
=(-3x^2)f'(-x^3)dx
dy =-3x^2f’(-x^3)dx
y=f(-x^3)求dy
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