Find

Question

dy/dt
when
y = 2x2 + 2x + 4
and
dx/dt = 14
when
x = 7.

Answer 1

FORMAT WRONG ABOVE....
Correct one is..

Find
dy/dt
when
y = 2x^2 + 2x + 4
and
dx/dt = 14
when
x = 7.

Answer 2

just use the chain rule. Since x and y are both functions of t,

dy/dt = (4x+2) dx/dt

Now just plug in your numbers