- #1
jameswill1am
- 11
- 0
Homework Statement
The function f is defined as f(x)=x^4, then;
f'(3x^3)=?
d[f(3x^3)]/dx=?
f'(xy^3)=?
Homework Equations
The Attempt at a Solution
My problem here is not so much doing the differentiation itself but understanding the notation.
1. for f'(3x^3) i want to differentiate my f(x) to get 4x^3 and then f'(3x^3)=4(3x^3)^3?
2. Here i want to diff. (3x^3)^4?
3. And for the third i want to put f'(xy^3)is equal to f'(x) and then put in x=(xy^3), and so something like 4(xy^3)^3?
Let me know if I'm on the right tracks. cheers