Question

Find d^2y/dx^2

Answer 1

\[\Huge y=500e^{7x}+600e^{-7x}\]

Answer 2

you want the second derivative?

Answer 3

\[\LARGE \frac{dy}{dx}=7 \times 500e^{7x}+(-7) \times 600e^{-7x}\]

Answer 4

\[3500e^{7x}-4200e^{-7x}\] is the first one

Answer 5

\[\LARGE \frac{d^2y}{dx^2}=7 \times 7 \times 500e^{7x}+7 \times (7) \times 600e^{-7x}\]

Answer 6

but the answer is 49y

Answer 7

umm okay,thanks