Question

If y = 3x^3 – 2x and dx/dt=3, find dy/dt when x = –2. Give only the numerical answer. For example, if dy/dt = 4, type only 4.

Answer 1

\[\frac{dy}{dt} = \frac{dy}{dx}*\frac{dx}{dt}\]
\[= (9x^2 -2)(3)\]
Plug in x = -2 ...