Answer number 5 [5] Using the limit definition of a derivative, find the derivative of f(r) = r-1. Show that thisderivative can also be obtained by evaluating%3Df(r+ Ar) – f(r - Ar)limAr402ArExplain why you were able to get the same derivative of f(r) by describing the geometric interpretationof this formulation of the derivative. You can draw graphs to help you discuss this. [20 points]

Given function: fx=x2-x we have to show that the derivative of the given function can also be…

[5] Using the limit definition of a derivative, find the derivative of f(r) = r - 1. Show that this derivative can also be obtained by evaluating %3D f(x+ Ar)-f(r - Ar) lim Ar-+0 2Ar Explain why you were able to get the same derivative of f(r) by describing the geometric interpretation of this formulation of the derivative. You can draw graphs to help you discuss this. [20 points]