| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎3 D5 E  p1 h$ A6 T7 N/ S

: R( w( A8 I* \% o$ P/ ^/ y+ ](x - a) = x - a5 X! E. R" f6 r- d% Y, f) n7 K
(x - a) (x - b) = x^2 – ax – bx + ab. \$ l& H1 k* Y* ^& l6 S
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
& N6 q6 N) P7 p0 W0 ^(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd6 w& g* l" \) k& G( ]: B  E* f
如此種推，) K2 N  h7 _$ T. G- A) E
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???: F8 f- H4 F& v: J7 Y! a
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[ 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
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Originally posted by Triangel at 2007-4-18 01:26 PM:  h0 g3 E( K' r% _9 o6 u- m6 M
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc' Q5 H& m4 x) I& S) q* M' k9 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:% _; B" ~+ N: u' Y& F) p
咁難既=.="
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* K: R1 U* E8 h1 q/ j- y" v! ?- |, m[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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, i2 K! L" T: U( W! H# ^Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:; F3 @+ Y8 B- b) C
第一個答中有獎: O" E9 X) P# Q5 G
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(x - ...

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- P7 p2 {2 [" Q& V4 ](x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:$ t* t; f! A" d0 }+ I7 j
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1 d' v) Q( c! A" J) ?(x-x)= 0 ，所以答案係0，is it?

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% \+ }; o8 B7 b) p  R唔似a.math題+ F! F% Q- l0 w; E+ O9 r, W( c
似IQ題=.=
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* g* K( s5 X1 x( Y[ 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:9 Z/ b+ |, G8 ?9 l+ a
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(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6 f$ g( o1 f, [2 b- A( f) Y5 [3 _
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.........
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這條問題，貼落吹水版，名副其實
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9 y0 k9 V5 T4 A) T" w; c. w[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]