Is anyone good with Racket? I am trying to define this function only using car, cdr, cons, snoc, rac, rdc, cond, if, else, lambda, the basics. But, I am not sure how to do it.

I am trying to define thisFunction recursively.

define (thisFunction myList) This function creates upward ramp from myList. For example (thisFunction '()) returns () (thisFunction '(x)) returns (x) (thisFunction '(x y)) returns (x (y)) (thisFunction '(x y z)) returns (x (y (z))) (thisFunction '(x y z h)) returns (x (y (z (h)))) (thisFunction '(x y z h d)) returns (x (y (z (h (d)))))

This is how I tried to solve it. But, gives me an error message.

(define thisFunction (lambda (lis) (if (null? (car lis)) (cdr lis) (cons (car(lis)) thisFunction(cdr(lis))))))