7.49 For each of the following problems, write a complete C program that includes a recursive function (a) The Legendre polynomials can be calculated by means of the formulas P0-1, PI-X, where n-2, 3, 4and x is any floating-point number between-1 and l. (Note that the Legendre polynomials are floating-point quantities.) Generate the first n Legendre polynomials. Let the values of n and x be input parameters