Using MATLAB, Define x and y vectors as x$=[13579]$ and y$=[2581114].$ Then use them in the following expressions to calculate z using element$-$by$-$element calculations.

a$.$ Z$=($xy$^2)/($x$+$y$)$ b$.$ z$=$x$($x$^2-$y$)-($x$-$y$)^2$