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發表於 2007-4-18 01:26 PM
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| TriTri | A-Math 加分題 |
第一個答中有獎
- h; H0 H i8 {) n; x0 H P& x# @6 `% B
(x - a) = x - a
1 t) o( v# s- \" C(x - a) (x - b) = x^2 – ax – bx + ab
L- K6 i, L. G P(x - a) (x - b) (x – c) = x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
. T% t' B1 u7 k2 N" b) X: m, ?2 t(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd# W9 |4 Q, l4 K- F0 R% h
如此種推,2 I, O7 W2 M) k* a8 Q9 v, E+ c, B
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???1 M* D S6 {. K S T; `
: \: ^/ N) l( [0 R3 ^5 _2 ][ Last edited by Triangel on 2007-4-18 at 01:52 PM ] |
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