Question

Consider the function below.
f(x) = 2x2 - 2x
(a) Find f '(1).

Answer 1

\[f(x)=2x^2-2x\]

Answer 2

2

Answer 3

how please show step by step

Answer 4

i got it to be 4

Answer 5

differentiate it and then put value of x

Answer 6

i did that but somehow keeps getting 4..and its not what the textbook shows me

Answer 7

Taking your function f(x)=\[2x^2-2x\] and differentiating it, you get: f'(x)=\[4x-2\]. Plugging in 1 you get f'(1)=\[4(1)-2\] or 2

Answer 8

so you dont use the lim as h approaches o f(a+h)-f(a)/h