Question

Find (d^2y)/(dx^2) in terms of x and y: xsiny=3
How to solve this?

Answer 1

The question is asking that you find the second derivative with respect to x. Do you know how to take a derivative?

Answer 2

For the first derivative, you will be using the product rule. Since you have two functions being multiplied
\[f \frac{ d }{ dx }g+g \frac{ d }{ dx } f\]

Answer 3

Also note, that the derivative of a constant is just zero. So the 3 becomes zero. For the second derivative, you will be doing product rule again.

Answer 4

thank you, i'll try ^^