$7\mathrm{.}8$ Using the method of singularity function, determine the slope at point $C$ and the deflection at point $D$ of the beam with overhanging ends, as shown in Figure P$7\mathrm{.}17.EI=$ constant.

$I=3,000i{n}^4$

Fig. P$7\mathrm{.}17.$ Beam.