Question

If y=2x^3+6x and dx/dt = 6, find dy/dx when x=5 .

Answer 1

\[y^{'} (x) = 6x^{2} + 6 \] at x = 5, subst all x for 5

Answer 2

thats not an answer choice

Answer 3

all the answers and in the 900s

Answer 4

hmmm.. i'm with earthcitizen.... the answer is not 156?

Answer 5

is y a function of t?

Answer 6

there is one that says none of these i can try that

Answer 7

or x?

Answer 8

x

Answer 9

is dy/dx = (dy/dt)*(dt/dx)

Answer 10

dont think so

Answer 11

i don't see any relationship wiv dx/dt and dy/dx

Answer 12

i agree with earthcitizen again... there has to be some relationship between y and t.