Answer
$\\y=3x+3$
Work Step by Step
$\\f(x)=x^3+1$
$\\f'(x)=3x^2$
$\\fâ(-1)=3(-1)^2=3$
Apply to straight line equation (y-y1)=m(x-x1)
$\\y-0=3(x+1)$
$\\y=3x+3$
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