Question$-1****$use Gauss elimination method$***$

An important problem in structural engineering is finding forces in a statically determinate truss.

This type of structure can be described as a system of coupled linear algebraic equations derived

from force balances. The sum of the forces in horizontal and vertical directions must be zero at

each node because the system is at rest. Formulate a system of linear equations and solve the

system of equations using one of the methods discussed in Lecture $10.$

Note: The solution must be done by hand; show the first three iterations. Keep your solution tidy

and clear to follow.

justify why you chose the specific method.

Calculate the corresponding errors.