\(\rm \displaystyle \lim_{{x \rightarrow \frac{x}{2}}} \left( \frac{\int_{x^3}^{(\pi/2)^3} \left( \sin(2t^{1/3}) + \cos(t^{1/3})) \, dt \right)}{\left( x - \frac{\pi}{2} \right)^2} \right) \)is equal to :
1
\(\rm \frac{9\pi^2}{8}\)
2
\(\rm \frac{11\pi^2}{10}\)
3
\(\rm \frac{3\pi^2}{2}\)
4
\(\rm \frac{5\pi^2}{9}\)