need to show some work

61608 assignment
Method used for the 4 problems below:
By definition of derivative we have
Derivative of a function f(x) =
Using this we calculate derivative for the given functions.
I.
Find the difference quotient as
Take limits as h tends to 0 to get y’ = 2.
II. 2.
Find the difference quotient as
Take limits as h tends to 0 to get...