$8.$ Use the ode $45$cm to solve the following problem,

d y$/$d x$=($x$)+$x$^2($y$)/5$ for $0<=$ x $<=5$ with y$(0)=1$

First create an anonymous function, use ode$45$ to solve, and plot the solution and also plot of the initial value. After all the plotting cmds use the savefig and print cmds to save the figure. Refer to previous labs and the example code and image $($below$).9.$ Use the ode$45$ cmd to solve the following problem,

d y$/$d x$=($x y$)-0\mathrm{.}5$ y e$^-0\mathrm{.}125$ x for $0<=$ x $<=3$ with y$(0)=5\mathrm{.}5$

First create an anonymous function, use ode$45$ to solve, and plot the solution and also plot of the initial value. After all the plotting cmds use the savefig and print cmds to save the figure. Refer to previous labs and the example code and image $($below$).10.$ Use the ode $45$ cmd to solve the following problem,

d y$/$d t$=70$ e$^-1\mathrm{.}5$ tcos $(4$ t$)-0\mathrm{.}4$ y for $0<=$ t $<=3$ with y$(0)=0$

First create an anonymous function, use ode$45$ to solve, and plot the solution and also plot of the initial value. After all the plotting cmds use the savefig and print cmds to save the figure. Refer to previous labs and the example code and image $($below$).$ Use the following linspace cmd for a smooth curve

$[$t$,$ v$]=$ode $45($F$,$ l inspace$(0,3,100),0)$ ; $\%$ Use linspace for a smooth curve