CS 3520 Homework 4 - Due September 25Place all of the requested functions in a single file, hw4.scm, and hand it in with submit on the CS filesystem.
Exercise 4.1, Let*Starting with the implementation of the EoPL 3.5 language in hw4.scm, extend the interpreter with a let* form that acts like Scheme's let*. For example, the program
let* x = 10
y = x
in yshould evaluate to 10, and the program
let* f = proc(x) +(x, x)
g = proc(y) +((f y), (f y))
in (g 10)should evaluate to 40.You will have to modify the grammar to add the new let* form.Hint: consider writing a helper function
eval-rand-sequence : list-of-sym list-of-expr env -> env to implement let*.
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