P$7\mathrm{.}10.($a$)$ Compute the slope at A and the deflection at midspan in Figure P$7\mathrm{.}10.($b$)$ If the deflection at midspan is not to exceed $1\mathrm{.}2$ in$.$ what is the minimum required value of I $?E=29,000$kip$\frac{s}{i}{n}^2.$ Use Moment area method only