Problems $1-10,$ Complete the following exercises. Show set up for each approximation.

A Riemann sum approximation with $n$ partitions to ${\displaystyle \underset{a}{\overset{b}{}}}f(x)dx$ is shown below.

A$.$ Is this a left$-$ or right$-$hand sum?

B$.$ What are the values of $a,b,n,$ and $x$

$$

Find the area A under the graph of $f()=sin(\frac{}{2})$ on the interval $0,2$ with $n=4$ partitions using Midpoint sums.

se the graph below to estimate

$$

Find the area A under the graph of $f()=2^x+3$ on the interval $0,2$ with $n=4$ partitions using the Trapezoidal sum method.