| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎; A) ]6 P* u; t+ ~% [
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(x - a) = x - a6 q/ z! p0 R& [4 b, C
(x - a) (x - b) = x^2 – ax – bx + ab9 h2 [! U% |8 s; e7 Q
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc$ q2 C  a# K7 u
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd; W; n$ W3 X- V1 U7 h
如此種推，  u4 _: o" a' I; ], d. P( s
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???. T# }; B% O/ T8 ]& }
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[ Last edited by Triangel on 2007-4-18 at 01:52 PM ]

大大

點解你個問題好似有d問題
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Originally posted by Triangel at 2007-4-18 01:26 PM:% |) Y' ^7 V$ g- }4 K( A1 W, W
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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[ Last edited by 大大 on 2007-4-18 at 01:54 PM ]

Triangel

Originally posted by 大大 at 2007-4-18 01:41 PM:. O* ~& k& Q2 S5 f, [4 c* B
咁難既=.="
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3 J6 r" o1 ~2 c8 \[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:1 e$ ?9 {: Z) J  D% Z4 K# B
第一個答中有獎
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(x - ...

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(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:
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(x-x)= 0 ，所以答案係0，is it?

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9 B; Y* s7 `# g- r  m0 \$ O1 S唔似a.math題9 s5 h( N+ `' L( r
似IQ題=.=4 O/ V! n/ \+ A7 n
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[ Last edited by 大大 on 2007-4-18 at 01:57 PM ]

Triangel

Originally posted by littlenic at 2007-4-18 01:54 PM:2 W4 y  k* k6 A

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(x-x)= 0 ，所以答案係0，is it?

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waikong

我係學校個學生會單張見過
$ o3 L7 j7 ^4 x+ R* Z% I諗左一陣先諗到

playbr2

我吾識答啊http://i72.photobucket.com/albums/i162/xcopy/Monkey/049.gif~~~ http://i72.photobucket.com/albums/i162/xcopy/Monkey/022.gif

karen0123

(哭)~~~~~其實我都知係0.........+ ?, y+ [# \3 h$ ^
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這條問題，貼落吹水版，名副其實
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]