Problem $1$: Make a MatLab program for the following Problem.

For the bar subjected to the linear varying axial load shown in Figure, determine the nodal displacements and axial stress distribution using $($a$)$three equal$-$length elements and $($b$)$ five equal$-$length elements. Let $\backslash ($ A$=2\backslash )$ in$.\backslash (^\{2\}\backslash )$ and $\backslash ($ E$=30\backslash$times $10^\{6\}\backslash$mathrm$\{$psi$\}\backslash ).$ Compare the finite element solution with an exact solution. $($write the matlab program$/$code for this question please$)$