Question

If y = 3x^3 – 2x and dx/dt = 3, find dy/dt when x = –2.

Answer 1

@hartnn @Luigi0210 @paki @Destinymasha @confluxepic @sammixboo @Nnesha @undeadknight26 @eliassaab

Answer 2

\[\frac {dy}{dt} = 6 x^2 \frac {dx}{dt} - 2 \frac {dx}{dt}

\]

Answer 3

You have x= -2 and dx/dt=3, replace and you will be done.

Answer 4

102?

Answer 5

its 9x^2-2

Answer 6

@eliassaab

Answer 7

\[
6 (-2)^2 (-3)- 2(-3)=-66
\]