Answer to question m3-13

Answer to Question m3-13

Type error. The left-hand operand of : is required to be an integer. But A is a list. The members of a list are required to be integers. But [A, B] appears to be a list of lists.

Nonsense. It appears that this equation is asserting that A:B is the same as [A,B]. That is false. [x, y] = x:y:[ ].