| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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4 N1 W2 F9 W4 b' T0 X/ x$ I(x - a) = x - a
" L6 }( h3 \. K3 E% U9 V0 {(x - a) (x - b) = x^2 – ax – bx + ab
; Z4 w* i/ _+ X(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
6 V2 U4 i( [5 `6 S6 Z(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd6 w. G& d0 m+ q/ d  C! f
如此種推，
' n  ^/ ]" k$ l3 a. }& @( }( ^# A% I(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???' j' I  q/ ~* ?# ~! b* Q" T+ [. n

5 y) v& f9 i# D# g[ 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 v* [6 R: j) _5 z
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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" H, t- M' I8 w2 g; D9 T- y[ 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:
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, ]) ?- K: X2 F- {
[ 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:# ^' \& J9 x) C9 D& G2 a
第一個答中有獎, ?# \5 W& w/ P- b$ n
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(x - ...

+ x" ?+ i2 y( P# P- [( f
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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:5 b. ]6 }; c' J' }0 I$ a
1 D* W# ~, b% `

4 R% ^/ f7 S" h- w(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題
3 ?$ B2 X; I8 u0 J* V; `3 h似IQ題=.=5 G: t' p# R6 Y# F1 j, \
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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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(x-x)= 0 ，所以答案係0，is it?

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/ c( b' p! R8 ]7 DBingo~

waikong

我係學校個學生會單張見過
2 Q7 Y% y  x6 c5 t( _6 n" h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.........% e% N9 H+ m5 `/ U3 C
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這條問題，貼落吹水版，名副其實+ x# s$ e8 F: e  P- F. G

5 j( U" k9 a: w/ w[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]