Question

If a function `f(x)` has `f^(prime)(a)=0a n df^(a)=0,` then `x=a` is a maximum for `f(x)` `x=a` is a minimum for `f(x)` it is difficult to say `(a)a n d(b)` `f(x)` is necessarily a constant function.
A. x=a is a maximum for f(x)
B. x=a is a minimum for(x)
C. it is difficult to say (a) and (b)
D. f(x) is necessarily a constant function

Answer 1

Correct Answer - 3
consider function `x^(3)-x^(4),x^(4)`