| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎5 Y5 [5 W& I( p3 s' v% P

- X& U7 L% T" D. j2 G(x - a) = x - a$ N1 z/ Q, r" U: j
(x - a) (x - b) = x^2 – ax – bx + ab, K9 a) C8 G8 V
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
" c2 ?* I, X6 w/ C- D, [(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd0 J2 V6 N- W9 j1 V
如此種推，# V# ~1 G! {8 e! C! p; @. P
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???* }  }' X. g/ Q) S4 j
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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3 {8 U6 N2 v. I& o- k# e) q

Originally posted by Triangel at 2007-4-18 01:26 PM:8 v% }' Y0 E+ y
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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6 f$ J5 K' H8 L& ~7 M- g/ B2 s8 F; d[ 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:! T' @8 S% e! }: E% r
咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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/ y" |) s9 @+ b4 ]- ]2 DThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:0 Z! B. @: O$ k# d6 a% `
第一個答中有獎
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(x - ...

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7 }% }* Y( C. j5 U(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:0 B& W1 ~* W8 q) i2 |! H+ ~) v5 e
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(x-x)= 0 ，所以答案係0，is it?

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* @4 R& v& l0 Z/ s( M' t唔似a.math題. X% U# P7 S; t# v  S1 a7 |7 I" K
似IQ題=.=0 S& |9 M/ _6 Z4 u. x

( ]' I1 F- j  J[ 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 O" c. `1 A! J) I, m

  `$ |  j  ]- Y: W8 l: j
8 V. z  d3 W% x% _8 y% d4 u(x-x)= 0 ，所以答案係0，is it?

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0 M# `5 R! V3 M* e, e3 j. c8 c' tBingo~

waikong

我係學校個學生會單張見過
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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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# b; L6 M4 E: ]3 n0 D- P$ C8 |  ~這條問題，貼落吹水版，名副其實) e( O; I4 I. ^# M+ s
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]