가 PC m) is odd polynomial, then p(m):-p(n) oly homi Las hi») is poly nomial, H's tontinous, iH's one end point hove negative and óne end point hove positve ena p 0)n means h(n) Crosses วา0m's at least one h(M) has al liast one soluten 'in bitwcen [-1, 17