| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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8 O+ u$ A$ V: B2 y(x - a) = x - a
1 Q  A$ r4 ^7 o! V, U# g5 N(x - a) (x - b) = x^2 – ax – bx + ab2 ~2 M2 c( l+ Y9 a  G! X4 i
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc8 ]& w8 z5 E! t. ]; n
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
8 `% e2 |2 o+ R- h' t如此種推，
+ o! O% c- Q) k3 T8 {% u(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???% A$ B2 g/ c& c/ g9 j( v) X; `

; U1 u! m5 `  Q+ f/ 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& ?* }" V5 H7 a" I; T* D% o

Originally posted by Triangel at 2007-4-18 01:26 PM:
' k3 x0 d) K1 ]+ r4 H(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:
$ p% F0 ]! A$ \7 T  j咁難既=.="8 G7 n7 ~# T- T5 d
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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8 ~1 w; \; D* ?, B% {5 BThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:& o* o7 \- g$ ?+ r+ T# x
第一個答中有獎
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(x - ...

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8 C1 y& a# Q* x9 h4 T5 g2 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:% p- z  e* X/ s1 c5 @1 U- {0 K

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(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
9 d* e% j1 ^6 K: q/ D. Q* S似IQ題=.=1 T, v' }! j1 C* z7 k+ z' y4 O

5 H( P1 [+ y% d& X% R: E. `[ 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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5 Q( H) X, H$ N& k! uBingo~

waikong

我係學校個學生會單張見過
  `* s7 [* g% L/ n% X) M& v! G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........./ `2 m2 q) I( G, n, N5 J8 d
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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 ]