In LISP

1. Define a function my-last that takes two parameters, a symbol A and a list of symbols L, and returns the list starting where the last occurrence of symbol A is in L. It returns nil only if A is not in the list. Examples:
   • (my-last 'a '(a b c a b c a b c d e f g)) --> (a b c d e f g)
   • (my-last 'b '(a b c a b c a b c d e f g)) --> (b c d e f g)
   • (my-last 'c '(a b c a b c a b c d e f g)) --> (c d e f g)
   • (my-last 'g '(a b c a b c a b c d e f g)) --> (g)
   • (my-last 'h '(a b c a b c a b c d e f g)) --> nil

I only have these functions available.

1. defun cond cons car cdr operators +, -, <, and >

   null eq listp atom symbolp