Solution:
is a differentiable function
is a differentiable function
is a differentiable
function
is not differentiable at .
is differentiable everywhere except at
Hence
Let be given by If A denotes the set of points where is not differentiable, then A =
is a differentiable function
is a differentiable function
is a differentiable
function
is not differentiable at .
is differentiable everywhere except at
Hence