- #1

- 338

- 0

y'(x)=f(y(x))

y''(x)=f'(y(x))y'(x) = f'(y(x))f(y(x))

y''' = f''(y(x))(f(y(x)),y'(x)) + f'(y(x))f'(y(x))y'(x)

I can understand the second derivative but not the third derivative especially the term

f''(y(x))(f(y(x)),y'(x))

Can someone please explain the meaning of the notation used here.