Leta1, a2, ..., ambe he distinct real roots ofP(q1,q2, ..., q(k-1),xk), in ascending order. Leta0be minus infinity anda(m+1)be plus infinity. Letibe the unique index such thatqkis in[ai,a(i+1)). The index ofPinqis2iifai = qk, and2i + 1otherwise.

Christopher W. Brown Last modified: Fri Jun 26 14:56:11 EDT 1998