| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎1 C3 p; z7 f3 _# W: q
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(x - a) = x - a
/ I& o8 ?( w4 s) ?3 [5 r. v8 I(x - a) (x - b) = x^2 – ax – bx + ab, _% D* e* \) [( T  c* |  @7 ]
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc, G0 c7 S) ]8 \& k- {
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
) o! B% ]' N0 S% r; F7 v+ p如此種推，
+ R* ^1 Y8 M8 X2 W6 R(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???& N! F/ k4 Q( e4 ?8 P

+ E0 M1 @2 s* W" U" ?" L[ 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- f3 F0 [1 ?0 w: n( z

Originally posted by Triangel at 2007-4-18 01:26 PM:
% L) F: x4 `/ c9 ?& F5 x(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:
* q8 R0 u7 y: i6 ?) e! g& ^5 m- A1 q咁難既=.="
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[ 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:
- N+ ]# {$ _8 w; N0 e第一個答中有獎8 q9 r; F) J. p/ ~& r" l0 U

" S' e8 w/ P& a- A7 d(x - ...

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(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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( ]- e% {6 O, [  r8 {" a(x-x)= 0 ，所以答案係0，is it?

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2 [. w- F8 ~- ]7 t* s, e1 _+ D唔似a.math題
" u! a# c1 ^+ d: N) q( P似IQ題=.=- c' h% K( ^4 f; D- Q0 n
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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:
2 k0 e( K7 O8 c3 ]7 K0 E) r9 ]% R% `' l) G6 C1 W" z. x, j

6 N+ h) t5 _2 b  Y4 S1 i(x-x)= 0 ，所以答案係0，is it?

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2 B) R2 }2 C3 b) nBingo~

waikong

我係學校個學生會單張見過% y7 G. ^8 r$ g' F- {5 W& Q% ^1 w! j% 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.........1 j! N8 U) r' R9 c1 H+ k
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這條問題，貼落吹水版，名副其實
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  w( b3 g0 e' B, S* c8 x( B- e[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]