Function 1 (2p) Write and run a recursive Lisp function, called "linearp," that tests if its argument is an atom or a linear list. The function returns true if the argument is an atom or a linear list and NIL otherwise. A linear list is a list consisting of a sequence of atoms: (A1 ... An). For instance, the function should have the following behavior: (linearp 'A) (linearp '(XM )) (linearp '((A B) (C (D E)))) NIL Function 1 (2p) Write and run a recursive Lisp function, called "linearp," that tests if its argument is an atom or a linear list. The function returns true if the argument is an atom or a linear list and NIL otherwise. A linear list is a list consisting of a sequence of atoms: (A1 ... An). For instance, the function should have the following behavior: (linearp 'A) (linearp '(XM )) (linearp '((A B) (C (D E)))) NIL