$1-$ Consider the following integral:

a$)$ Write a VBA code to evaluate the integral with n $=8,$ and error must be less than $0\mathrm{.}01$ using

Trapezoidal method.

b$)$ Write a VBA code to evaluate the integral with n $=4,$ and error must be less than $0\mathrm{.}01$ using

Simpson's $1/3$ method.

c$)$ Write a VBA code to evaluate the integral with h $=$ Pi$/8,$ and use $7$Pi$/8$ for upper limit of integral

error must be less than $0\mathrm{.}01$ using Simpson's $1/3$ method.