Please write a full asnwer and give a good explanation.

1) Write a Scheme function called penultimate that takes a list, which must contain more than one value, and returns the second-last t value in the list. For example, the penultimate (1 2 3)) returns 2. b) Write a Scheme function called remove-penultimate that takes a list of numbers, which must contain more than one value, and returns the list of all values except the second-last in the list. For example, the result (remove-penultimate '(1 2 3)) returns (1 3)