a$)$ Find the deflection at the mid$-$length of the beam $($in mm$),$

$($b$)$ Find the reactions: Moment $($kN$.$m$)$ and force $($kN$)$ at the left support.

The beam is fixed at the left end, and free at the right end. Use steel beam with E$=210,000$

MPa, and I$=3\mathrm{.}54\backslash$times $107$ mm $4(250$ UB $25\mathrm{.}7).$ You can use Excel or MATLAB to conduct the

matrix operations. If you do so$,$ then insert snapshots of Excel tabs or MATLAB scripts.

You need to show the solution procedure, i$.$e$.,$ calculation of the stiffness matrix, load

vectors, elimination approach, etc.