Thread: How do you find the second derivative?

For example,
if f(x)=x^9+4x^3+3x, find the second derivative f " (x).

im so confused...i honestly have no idea

to find the second derivative, you simply take the first derivative, then from that result do the exact same thing to get the second.

Remember the derivative of a function f(x) is another function (The 'Gradient function'), denoted f '(x), so all you do is take the derivative of this function to get the 'second derivative,' f''(x)....so it's as easy as that - differentiate twice. Think you can do it now?

edit: beaten to the mark

yes....thank you both very much