| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a7 g1 W+ e7 r3 t1 n2 y" w
(x - a) (x - b) = x^2 – ax – bx + ab& [( @' T9 i7 Z! X0 L6 i2 T5 |
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc0 l; a! x2 d8 F" j3 Y3 F5 X
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
: K& E$ |- H' l* w0 e如此種推，
% q8 F1 {1 Z6 ^6 w! s5 p(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???1 e' Y3 C1 [8 w) q5 ~

8 b, l- u7 R6 U! ^' Q" ^( q[ 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, q4 h8 Q7 f# r2 x- l' e

Originally posted by Triangel at 2007-4-18 01:26 PM:
* l8 d& R0 ~" p) B' _(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:
& H4 r7 m" b; h$ ?- A& S' y' U咁難既=.="6 D- K0 }: I" H7 P4 |) }

4 ^0 F2 u1 g# q2 C# Y6 i+ O( ^[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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+ R$ [' }$ [2 `6 t2 Z. M7 t- z" XThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
" z% A6 D# k7 c% l, w7 Q6 ~) i第一個答中有獎% l  e7 K9 m) I% |1 d: j7 y

, O, n4 I* i& Z% e+ N3 C4 W(x - ...

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# ]+ x. p/ r" ~8 H7 I(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:# d0 g. i6 X( V. B9 d
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% u3 U+ N% @  L" ?$ d, P(x-x)= 0 ，所以答案係0，is it?

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: B% e& D/ U. C2 V! o4 a唔似a.math題
8 Q* j$ Q: a% q( s' s. X, P  q似IQ題=.=
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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:
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5 d3 Y6 U- ^. W0 Y(x-x)= 0 ，所以答案係0，is it?

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0 u& T$ U! t) Z' t. ~$ S' pBingo~

waikong

我係學校個學生會單張見過$ G4 Q% q( H2 i1 y
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.........( K# r, o! q, V: I, ~5 T  O

! v1 J0 E( C& {+ m1 W1 V* Z4 r7 D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 ]