Answer
$f'(x)=3ax^{2}+2bx+c$
Work Step by Step
$f(x)=ax^{3}+bx^{2}+cx+d$
$f'(x)=3ax^{3-1}+2bx^{2-1}+c$
$f'(x)=3ax^{2}+2bx+c$
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