Construct the stiffness matrix for each element in the givens

global $x-y$ coordinate system.

Write the global stiffness matrix for the structure as an $nn$

matrix, where there are $n$ nodal displacement components.

Use the information in the Fixed$-$End Actions table to replace

each element with a statically equivalent element such that

there are loads applied only at the nodes of each element.

Write the load matrix as an $n1$ matrix with $4$ unknown

variables.

Write the displacement matrix as an $n1$ matrix with $5$

unknown variables.

Determine the displacement components of node $2.$

Determine the support reactions.