| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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0 p8 a! v( ~+ G! N- l  b, n(x - a) = x - a
+ W$ U3 Q8 V' a4 {+ N/ x6 E(x - a) (x - b) = x^2 – ax – bx + ab% Q/ y2 h# m$ O8 v4 T, Z' _- \
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc6 {; J# S, l' n- r6 Z  }( V
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
! e; y0 n; v5 ?! a4 W  \2 F如此種推，. J+ U6 u% a+ G) h. R- F+ s
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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8 x" g3 r# D* D- e$ `: Z( i[ 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5 B7 C/ ?" K9 Y/ U" _" V

Originally posted by Triangel at 2007-4-18 01:26 PM:
3 D* A- e6 W) p3 e; {9 W(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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. G/ P0 s" O4 r/ \6 j[ 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:
6 k. t# o  R: \; t咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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2 p  a3 {! q# o4 S7 mThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
+ q% r% a1 ]2 D第一個答中有獎0 a% d2 T$ {, n) [. `, {0 e/ H

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7 O  q) t/ f- @. P9 ~4 h(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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(x-x)= 0 ，所以答案係0，is it?

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" z  j5 g- R6 S* N, W唔似a.math題
" r7 P6 r: S$ w% d! v" E似IQ題=.=; s; G* H6 L' `1 e0 N
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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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Bingo~

waikong

我係學校個學生會單張見過2 `8 P7 T- C/ R% y; {5 u8 x
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.........  @( \% I3 ^2 k( e6 {
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這條問題，貼落吹水版，名副其實, |* L2 V* W& t5 n  r3 j, e6 G
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]