- #1
Frosteh
- 8
- 0
Homework Statement
This is exactly how this was written on the quiz today:
If f(1)=1 and f'(x)=(1/3) when x=1, find d/dx[f(2x2-x)].
Homework Equations
Basic derivative rules (i.e., power rule).
The Attempt at a Solution
The first statement simply determines that f(2x2-x) is true. When taking the derivative of f(2x2-x), you get 4x-1. However, f'(1)=(1/3). When 1 is entered into 4x-1, (1/3) is clearly not the answer. I listed my answer as 12x-3, by setting 4x-1=(1/3), but I'm not sure if this is correct.
Is my professor insane or is this just a trickily worded question?