| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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. \; d" \/ ]. i: }! @! N9 [- h% F4 w(x - a) = x - a7 k# w1 i1 m8 T% [' T& l* \
(x - a) (x - b) = x^2 – ax – bx + ab4 w$ ?# r) O; S& o; ^
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
5 X' O) W6 o+ `2 h* j4 S! y(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
+ }+ O" ~6 A3 o. ^如此種推，3 C" B  V* e! A8 u4 K) T1 d
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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1 {, ^5 N" I, G% M7 `/ b  j, J; c, j[ 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; A- I. H5 }8 v! y1 G9 y' l

Originally posted by Triangel at 2007-4-18 01:26 PM:: Y( V2 u: [" R
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc; `) N3 D9 K  M2 o( v% w
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5 u) I2 d4 R! S! }( E9 T[ 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:, D: ]1 e8 v1 E+ y# q& F5 _" U
咁難既=.=", o' n" ]: |/ u% K3 D

" q# n4 ^* h+ N+ C[ 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:0 w) U" p6 O/ P7 c( Z3 H
第一個答中有獎
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& Z+ E9 q) J4 |& b) R(x - ...

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8 [2 Z4 I/ a: V3 Z1 m- {; W(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:$ y6 R$ A1 F4 s

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1 w+ B7 @1 G' B1 M* g(x-x)= 0 ，所以答案係0，is it?

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) H! g9 w2 O) u$ x' R唔似a.math題: Y  {. S: i+ A# Z9 r. S% G  D
似IQ題=.=, _- q6 {3 m) G/ `6 n7 Y8 w' B( f

3 {! I; S2 B. v[ 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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, _/ g! `( F: v; E2 x. V# _(x-x)= 0 ，所以答案係0，is it?

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" w8 [% X" T7 F; z% X/ RBingo~

waikong

我係學校個學生會單張見過' i3 ?. W  J" g* e
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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2 E# j3 _3 y3 s9 H! Z3 K這條問題，貼落吹水版，名副其實1 Q! N* d9 Z3 n
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]