# Example 11 - Chapter 13 Class 11 Limits and Derivatives

Last updated at May 29, 2018 by Teachoo

Last updated at May 29, 2018 by Teachoo

Transcript

Example 11 Find the derivative of the constant function f (x) = a for a fixed real number a. Given f (x) = a ,where a is constant thus, f(x) is a constant function We need to find derivative of f(x) i.e. f (x) We know that f (x) = lim h 0 f x + h f(x) h Here, f (x) = a So, f (x + h) = a Putting values f (x) = lim h 0 h = lim h 0 0 h = lim h 0 0 = 0 Thus f (x) = 0 Hence, derivative of constant function is 0

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