Let f(x)=2 x^3-k x^2+2 x-k . For what values of the real number k does the graph y=f(x) have two distinct real stationary points?

Question

Let f(x)=2 x^3-k x^2+2 x-k .     For what values of the real number k does the graph y=f(x) have two distinct real stationary points?

Examsnet · Accepted Answer

Correct Answer is :  −2√3<k<2√3

Oxford University MAT 2017 Solved Papers