Question

If $f(x)=\begin{cases} \frac{1-\cos4x}{x^2} & x\ne0 \\\ k & x=0 \end{cases}$ is continuous at x = 0, then the value of k is :

• A. 8
• B. 7
• C. 6
• D. 4

Answer 1

Answer: (A)

8

Answer 2

The correct option is (A) :8.