Plot the step response for given problem below using MATLAB. From your plots, find the time constant, rise time, and settling time for given system below. Explain your codes with using $\%$ sign. Codes without comments $($using $\%$ sign you may write comment for all command$)$ will not be graded.

For each of the second$-$order systems that follow, find $,{}_n,T_s,T_p,T_r,$ and $\%OS.$

a$.T(s)=\frac{16}{s^2+3s+16}$

b$.T(s)=\frac{0\mathrm{.}04}{s^2+0\mathrm{.}02s+0\mathrm{.}04}$

c$.T(s)=\frac{1\mathrm{.}05{10}^7}{s^2+1\mathrm{.}6{10}^{3}s+1\mathrm{.}05{10}^7}$