1. The problem statement, all variables and given/known data 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)]. 2. Relevant equations Basic derivative rules (i.e., power rule). 3. 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?