| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎: ^6 ~) Y: M! P0 t2 }
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(x - a) = x - a
" r% ~$ o8 B6 A# \(x - a) (x - b) = x^2 – ax – bx + ab
8 e0 b' w: c% m; \(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc- t+ L" X9 W0 h5 F$ s$ i
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd3 E- y4 B) D, j3 S. x: Q* X
如此種推，6 |0 O; A* L6 ^, H: j' s6 {
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???$ R/ H4 |8 d$ y9 m0 G2 b

8 F- @1 J/ j$ O5 s) _( K' g[ 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7 ~% P8 @' W1 o' i

Originally posted by Triangel at 2007-4-18 01:26 PM:( v! S* W6 @+ c' _5 Q
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc3 B8 {5 j7 m  U6 A& @7 C* S

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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:
- h" m, F' p; z! g2 i咁難既=.="
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0 ]( P3 v3 h+ {[ 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:) d. c& i& t* b- k
第一個答中有獎
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(x - ...

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" q: @# E7 D3 b, N0 R0 z9 J(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:& ^' @" u! @# D. q, J' R9 a  Q

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(x-x)= 0 ，所以答案係0，is it?

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2 \1 A3 {1 c) ?* }+ `4 d唔似a.math題- ]" M' }6 x" M& z
似IQ題=.=. R* F  m+ ]( U9 l, f
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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:0 f5 [# \+ _$ Q+ j: A

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( @1 u& B  ^; k# [9 P) K1 q  [$ d(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3 ]# ]5 y1 Y1 L7 r/ J, s& r( K0 X
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.........  b6 T; V  n, P3 Z+ w  J  Z/ w) X
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這條問題，貼落吹水版，名副其實& Q- o1 Q( s$ P' [% d
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]