| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) (x - b) = x^2 – ax – bx + ab
7 E$ b- |5 Q: I- _(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc9 H" q& y: P0 h: H) t8 P
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
+ S0 G8 X5 F8 _/ j; h+ E2 V( U如此種推，
5 d) z4 G7 o4 _5 b0 M9 E- f8 ](x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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1 K3 E4 {: A9 q% G/ y+ A$ ~[ 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:. _& K1 v+ N5 W# g( w& U
(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:4 E1 b! \# O% h7 a7 \4 H7 [
咁難既=.="
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& O& x4 \6 `8 ~3 T1 g) t2 t- K5 F7 u[ 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:
" u! G& P- s1 R: u5 w第一個答中有獎
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. R% _6 F# a4 ]0 r. P(x - ...

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1 U" C% z. Y8 m4 B' A3 l/ {9 M7 n* l' y(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:# g; O( B4 Y4 r( g8 m

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" Z9 y8 F# n% e& ^$ e$ F(x-x)= 0 ，所以答案係0，is it?

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$ P  i/ u, x' ^1 D7 @唔似a.math題# J6 p0 _# N+ W/ @9 r& P& y
似IQ題=.=% k7 p  m1 t$ `2 g) l% N% ^1 ]

% B0 C" E9 h" i[ 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:0 n" q( p+ [3 H' T. @
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9 u$ H0 p. |) k. Z% Z(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7 c- S# i; X3 U. `# }
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.........$ u8 E* Q0 [! T6 e% y$ N" l: m' {
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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 ]