f(x) = | m(x - a)(x - b)(x - c) | / | n(x - d)(x - e) |

f(x) = | m(x - a)(x - b)(x - c) | / | n(x - d)(x - e) |

f(x) = | c3nx^{3} + c2nx^{2} + c1nx + c0n |
/ | c2dx^{2} + c1dx + c0d |

x:
y: