def lbp_mul_term(f, cx):
 return lbp(sig_mult(Sign(f), cx[0]), Polyn(f).mul_term(cx), Num(f))

def lbp_mul_term ( f , cx ) : return lbp ( sig_mult ( Sign ( f ) , cx [ 0 ] ) , Polyn ( f ) . mul_term ( cx ) , Num ( f ) )
multiply a labeled polynomial with a term .