Calculus please help
posted by John .
Let f(t)=(t^2+3t+8)(2t^2+6).
(a) f'(t)=
(b) f'(4)=

Find the derivative of the function using product rule.
a) f'(t) = 8t^3 + 18t^2 + 44t + 18
b) sub in the value of "t"
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