In MatLab:

Write a function that takes as input an array of n numbers $($n$>20).$ The function then finds the max value of the array then makes a new array of every multiple of $4$ between $0$ and the max value $($not including $0).$ The function should return the max value and new array. Use built in functions where necessary. For example: if the vector is given as $[4,6,10,16].$ the function finds the max value $(16$ in this case$).$ The new array output will be $[4,8,12,16].$

Then use this function to output the max value and the new vector from the intitial set of numbers generated as follows: $10*$rand$(1,50)$