code in sml please 2,3,4,6

1. (6p) Function square of type real real that returns the square of its parameter. For example square 4.0 should return 16.0. 2. (6p) Function max 3 of type int int int int that returns the largest of three integers. For example max3(3,11,7) should return 11 . 3. (6p) Function cubesum of type int int that takes a nonnegative integer n and returns the sum of cubes of all the integers 0 through n. Your function should return 0 if the parameter is negative. For example cubesum 4 should return 100. 4. (6p) Function power of type real * int real that raises a real number to an integer power. For example power (3.0,4) should return 81.0 and power (2.0,2) should return 0.25 5. (6p) Function min of type int list int that returns the smallest element of a list of integers. Your function need not behave well if the list is empty For example min[3,5,17,8,9,3] should return 8. 6. (6p) Function fourth of type ' a * list @ ' 'a that returns the fourth element of a given list. You may assume that the list has at least 4 elements. For example: fourth [1,5,9,2,7,8] should return 2