If y = 3t3 + 2t2 – 7t + 3, find (frac{dy}{dt}) at t =…

If y = 3t³ + 2t² – 7t + 3, find (frac{dy}{dt}) at t = -1

Correct Answer: Option C

Explanation

y = 3t³ + 2t² – 7t + 3
(frac{dy}{dt}) = 9t² + 4t – 7
When t = -1
(frac{dy}{dt}) = 9(-1)² + 4(-1) – 7
= 9 – 4 -7
= 9 – 11
= -2