Can anyone help me to solving problem.
Is the following proposition right? Prove, if right. Give a counter example, if wrong.
Proposition: If $f$ is continuous at $x=0$ then $f^4$ is differentiable at $x=0$.
Can anyone help me to solving problem.
Is the following proposition right? Prove, if right. Give a counter example, if wrong.
Proposition: If $f$ is continuous at $x=0$ then $f^4$ is differentiable at $x=0$.