| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a
" ?5 o) n8 R. F. ](x - a) (x - b) = x^2 – ax – bx + ab) f3 N2 D2 \& x) J; M8 _
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
* e& r) c, w  S5 w(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd& A0 O' \, G. J$ W
如此種推，
: J' ?7 }# }0 m  [(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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; }3 Y* `# ?, j+ a3 x[ 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9 F2 \6 |; X: z  W2 q/ x3 u

Originally posted by Triangel at 2007-4-18 01:26 PM:% W9 ^! j- C* a3 J+ n
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc/ ]! W  k% H$ G) G

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) p, `/ |! ~, g, r. t( r[ 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:
5 m% |" q0 X' M  p4 c咁難既=.="
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2 b5 y5 Q2 T' ?; w" i5 R/ R' B[ 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:, l- q2 y- F& W
第一個答中有獎% t- [7 \* m& A6 \/ W
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(x - ...

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  r% E& O; O/ j9 m& O3 k4 `(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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7 P' l* v6 c! Q( ^! I* ^  A(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
0 g9 P! |9 d5 l! H似IQ題=.=+ B. F1 z1 M! g" y. c
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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:
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(x-x)= 0 ，所以答案係0，is it?

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Bingo~

waikong

我係學校個學生會單張見過; G  X( ?1 w, ], r
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.........
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這條問題，貼落吹水版，名副其實6 i- N9 `4 t! J  |0 _

! d% V9 u& A/ x  ^9 Q+ @& y* r+ v! y[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]