The function $f(x)=x^3, x \in R,$ has

Maximum value at x= 0 Minimum value at x= 0 Maximum value at x= 1 Neither maximum nor maximum value at x=0

Neither maximum nor maximum value at x=0

$f(x)=x^3$ $f'(x)=3x^2=0⇒x=0$ No sign change in wavy curve method ⇒ 0 → Neither maximum/minimum point