Riemann Sums and Notation Practice Test

$\displaystyle \int_{0}^{\pi/2}\sin(x),dx$

$\displaystyle \int_{0}^{\pi/2}\sin(2x),dx$

$\displaystyle \int_{0}^{1}\sin\left(\frac{\pi}{2}x\right),dx$

$\displaystyle \int_{0}^{\pi}\sin(x),dx$

$\displaystyle \int_{0}^{\pi/2}\sin\left(\frac{x}{2}\right),dx$