Question

Let $f(x) = \frac{(1 - cos 4x)}{x^2}$, if x < 0 and a, if x = 0 and $\sqrt{\frac{x}{(\sqrt{(16+\sqrt{x})}-4)}}$, if x > 0}. If $f(x)$ is continuous at x = 0, determine the value of a.

Answer 1

The correct answer is: