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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: N7 f$ z6 ^, L# _. D
0 r1 U( u$ q7 m: m(x - a) = x - a
2 Y& X$ p5 T0 Q; \( b+ H5 F, t' O(x - a) (x - b) = x^2 – ax – bx + ab
6 K8 f) J* R/ j. p% l2 y% N(x - a) (x - b) (x – c) = x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
) g) h# A5 p9 o/ h(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
, r: _2 o \' \. N9 h如此種推,
3 G# _- i+ `3 K(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???) h" a# y: X9 {# n/ Q; m
0 D4 D. u& R* a1 a0 b% ?$ F8 M[ Last edited by Triangel on 2007-4-18 at 01:52 PM ] |
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