Let P and Q be polynomials with positive leading coefficients. Consider the limit below. (If the limit is infinite, enter 'co' or '-co', as appropriate. If the limit does not otherwise exist, enter DNE.) P(x) lim x11Q(x) (a) Find the limit if the degree of P is less than the degree of Q. (b) Find the limit if the degree of P is greater than the degree of Q.