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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0 T3 |8 B! F+ D& I1 {
, [- F$ _, ~* _# c% r" H2 K7 t(x - a) = x - a
Y8 v3 b/ e1 l(x - a) (x - b) = x^2 – ax – bx + ab
$ N" j' |- p' c; h, ^' y# Q$ v(x - a) (x - b) (x – c) = x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc, _, ?- H( m2 I& u3 G
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
0 |# M9 F% ]' K如此種推,
& U1 H; P6 E1 R8 R6 Y( k' h8 m# _: `(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
; \9 @. ^0 D$ w5 {, T+ f- Z8 u$ j7 ~: ]
[ Last edited by Triangel on 2007-4-18 at 01:52 PM ] |
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