Q. 5

If f (x) = x

Class 12th RD Sharma - Volume 1 10. Differentiability

Answer :

We are given with a polynomial function f(x) = x³ + 7x² + 8x - 9, and we have to find whether it is derivable at x = 4 or not, so by using the formula, f ‘(c) = , we get,

f ‘(4) =

f ‘(4) = lim_x_→₄ x² + 11x + 52

f ‘(4) = 112.

Rate this question :

How useful is this solution?

We strive to provide quality solutions. Please rate us to serve you better.

PREVIOUSIf for the functi NEXTFind the derivati

Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts

Dedicated counsellor for each student

24X7 Doubt Resolution

Daily Report Card

Detailed Performance Evaluation

view all courses