Chapter 21, Problem 4P

Integrate the following function analytically and using thetrapezoidal rule, with n= 1, 2, 3, and 4:

${\displaystyle {\int }_1^2{\left(x+2\text{/}x\right)}^2}dx1/2$

Use the analytical solution to compute true percent relative errors to evaluate the accuracy of the trapezoidal approximations.