Write a set of LISP functions to implement the following operations on polynomials: (recursive or not) Poly-add to add two polynomials Poly-sub to subtract two polynomials Poly-mul to multiply two polynomials Poly-der to compute the derivative of a polynomial Poly-val to compute the value of a polynomial for a given argument Poly-prim to compute the primitive(antiderivative) of a polynomial

A polynomial will be represented as an association list. There will be one sublist for each term of the polynomial. Each sublist will have the exponent of the term as the first component and the coefficient as the second component. Ex: 3X5+3X3+7 is represented as ((5 3) (3 3) (0 7)).