| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎# W2 V0 Q& x+ |4 R: ~; E2 o
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(x - a) = x - a0 D$ A/ f% ~" r
(x - a) (x - b) = x^2 – ax – bx + ab7 S) p1 b/ [$ s: H/ u
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
" O2 T4 @  H6 c9 W(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
/ [2 _4 f5 v* \& l( S  \3 p如此種推，
( n8 l. t# T) f% }# @(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???: c; a$ G- q2 W* b! G7 I
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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8 Q7 I/ r% u. c* V8 t

Originally posted by Triangel at 2007-4-18 01:26 PM:
+ T+ B/ L2 C2 ~8 J; s(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc
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. A+ Q( h# _: o- M% s6 h[ 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:
! Q0 k' i1 g% k% m4 I咁難既=.="
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[ 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:
+ M  C3 b' N; U7 w5 l+ H4 K& j8 P第一個答中有獎) M4 o" @" O* r$ v% d* w& A3 D! b6 b

" t( v) ^& z, f% M% `+ u$ H(x - ...

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' y$ h- J: z+ 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:! e4 |% }0 G& ^/ Y+ _" u: s# u
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$ d; K* J+ v0 r4 v(x-x)= 0 ，所以答案係0，is it?

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1 N, Q: C6 E& O! j9 G2 \9 F' f唔似a.math題
9 _; P" [1 N5 R2 D) k  |0 _似IQ題=.=7 w, T- b5 n3 D9 \  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:( l2 i: t4 B; ?3 P8 n: }
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0 K6 l# M4 T! U6 c4 T% X(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4 k  p4 V7 ~* 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.........
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這條問題，貼落吹水版，名副其實5 ]# S. _% M1 |) a- J8 f) o2 a

2 @8 y3 j" }/ q( s" X[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]