Question

Use the definition of a derivative to find f'(x) and f''(x).
f(x) = 3x^2 + 4x + 1

I found that f'(x) = 6x+4

How do I find f''(x) ?

Answer 1

you just take the derivative of f'(x)

Answer 2

Just replace x with (6x+4) ?

Answer 3

All you have to do is take the derivative of 6x+4. This is called the second derivative