| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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, X: |& S- R5 R  }, S: d(x - a) = x - a: K2 ?. K3 c# E1 I0 W
(x - a) (x - b) = x^2 – ax – bx + ab
+ q( x3 T7 f: I) S(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
2 J9 R. Q% X& O(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd" z' h* [0 k6 m' D5 h6 v
如此種推，, k: L' ~+ _! r: b* I8 f
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???6 P4 R" P3 C. h7 J# E& D) b

( Y7 l5 u$ q' ^2 Z[ 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4 }! M- s  [/ c# s, u

Originally posted by Triangel at 2007-4-18 01:26 PM:
9 @: \; m: ~/ W(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc* S) `  K0 \6 K3 s: y* W
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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:2 R: I4 W5 x, S0 h% w. m3 X
咁難既=.=". Z1 _, j/ Z( v2 g% f8 V
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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- Z6 ^6 N$ p' R' B( X$ ^* O6 EThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
3 Y' p$ |9 I8 o  f; _7 ]第一個答中有獎
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(x - ...

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9 |: w4 |) A3 n) l& F(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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: h5 p1 V( w4 A! g* I4 R(x-x)= 0 ，所以答案係0，is it?

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: e  X2 z& l1 s; i% G# f唔似a.math題5 j$ b# ~0 ]$ ^, o' o) F, J
似IQ題=.=! _' F! U% N/ W" X- Q7 b
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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:& V2 p. z! O, n* v( p
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(x-x)= 0 ，所以答案係0，is it?

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/ a! W# W2 Z% w/ O' oBingo~

waikong

我係學校個學生會單張見過
% _( j( S8 M, ?. g# 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.........  n! |4 Y; n$ G2 {  I1 z6 K

6 k% W. y9 s6 g. n2 v  C這條問題，貼落吹水版，名副其實
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# ^- v) G) p3 P- O+ W1 @2 y[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]