what would the code be for number $3?$ number $2$ is there so you can see the code required for function Vec but I just need help with question $3$

return

After you have typed in the commands, save this file as Vec.m$.$

In the M$-$file editor, go to the $[$File$]$ menu and select $[$New$].$ Write your own

function called Uvec to calculate the unit vector between two points. $($Hint: it will be

very similar to the function Vec $,$ but the output vector must be normalized. The length

of a vector can be calculated using the command of sqrt $(dot(R,R)).)$ Save this new

function as Uvec.m$.$