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

A.

-1

B.

1

C.

-2

D.

2

View answer & explanation

Correct answer is C

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

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