Write the derivation of f(x) = 3|2 + x| at x = –3.

Question

Philoid · Accepted Answer

As we need to differentiate f(x) = 3|2+x|

We know the property of a mod function that

∴

Hence,

As

∴

Clearly form the above equation we can say that,

Value of derivative at x = –3 is –3 i.e. f’(–3) = –3