Problem $8\mathrm{.}4$

Consider a triangular panel as shown in Figure $8\mathrm{.}22.$ All dimensions are in meters. A constant temperature $T=5C$ is prescribed along the boundary $y=0.$ A constant boundary flux $\frac{?}{\text{b}\text{a}\text{r}}(q)=10W{m}^{-1}$ is applied along the edges $x=0\mathrm{.}5$ and $y=x.$ A constant heat source $s=10W{m}^{-2}$ is supplied over the panel and a point source $P=7W$ acts at the origin. The material is isotropic with $k=2W{C}^{-1}.$

Number the nodes counterclockwise with nodes on the essential boundary numbered first. In this case will the element matrices and $($:$f^e$