Question

please help
if y=4x^3-2x
determine dy/dt when x=-2 and dx/dt=-2

Answer 1

@jim_thompson5910 @freckles

Answer 2

\[\frac{dy}{dx}=\frac{\frac{dy}{dt}}{\frac{dx}{dt}}\]

Answer 3

\[\frac{dy}{dx} \cdot \frac{dx}{dt}=\frac{dy}{dt}\]

Answer 4

since you wanted to solve for dy/dt anyways

Answer 5

you are given dx/dt

Answer 6

find dy/dx
by differentiating y=4x^3-2x w.r.t x

Answer 7

i got -92

Answer 8

thanks