Question

y=x4+4x, dx/dt=4 and x+1. how do i find dy/dt?

Answer 1

Just write it... \(\dfrac{dy}{dt} = 4x^{3}\cdot \dfrac{dx}{dt} + 4\dfrac{dx}{dt}\)

I'm not sure what the "x+1" is. If the problem is not presented correctly, that could make it more difficult.

Answer 2

oh sorry it was supposed to be x=1

Answer 3

thank you! i forgot 4(dx/dt)

Answer 4

its still saying its wrong :/

Answer 5

is that copied correctly?

Answer 6

yeah