9.9 Using Second Derivatives

The function $g$ is defined by

g(x) = 3x^2 + 6\cos x

for $−π≤x≤π-\pi \le x \le \pi$ .

Determine whether the curve with equation $y = g (x)$ has a point of inflection at the point where $x = 0$ . Fully justify your answer.

[5]

The function $g$ is defined by

g(x) = 3x^2 + 6\cos x

for $−π≤x≤π-\pi \le x \le \pi$ .

Determine whether the curve with equation $y = g (x)$ has a point of inflection at the point where $x = 0$ . Fully justify your answer.

[5]

9.9 Using Second Derivatives Questions