$1)$ First write a function y $=$ gpa$($score$,$ unit$)$ that has two inputs as score and unit, each input

being an array. The output y is the term GPA. The function must use array operation to calculate

the GPA. The function must be able to handle input arrays of any size.

$2)$ Add a sub$-$section $4$ to the Problem $1$ script. In this sub$-$section, assign values to the $2$ inputs $$

the score and unit arrays. Call the gpa function of part $1$ to output the term GPA y$.$ Display the

term GPA with only $2$ places after the decimal $($hint: use the appropriate format command$).$