The derivative of a function f (x) is defined by mm = ur h>0 Now consider the function f(x) = 219. By definition of the derivative, we have: x + m = m E h>O This limit is of type: (No answer given) We perform algebraic manipulations to evaluate the limit, and obtain that the derivative f'(x) is: f'OC) = Check Consider the function f ( x ) = Sx + ax -6 for x > 1 5x + b for x