Mechanics of Materials problems using MATLAB

Hello,

Mechanics of Materials problems done using MATLAB, needed help with questions 3, 5 and 9 from the project problems word document.

Supplementary images attached as follows:

For question 3 - 2.41 and 2.42

For question 5 - 3.35, 3.36 and 3.38

For question 9 - 9.73 and 9.74