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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
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(x - a) = x - a+ D. c& q- R5 Y1 R2 y0 M' r
(x - a) (x - b) = x^2 – ax – bx + ab. m7 W' X) N) h
(x - a) (x - b) (x – c) = x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
2 V$ ?( ~2 c, m(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
p3 q4 Z% L8 J如此種推,+ ?3 \) R& n3 d% g
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???# m, p8 l8 x3 f5 W- K1 A4 r& _/ Y2 A
0 t3 d4 ?' K8 ^
[ Last edited by Triangel on 2007-4-18 at 01:52 PM ] |
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