| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎5 y" C. B4 l, E$ u& d
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(x - a) = x - a
. O# }& n0 U+ @(x - a) (x - b) = x^2 – ax – bx + ab' H0 A3 D$ `* p& s4 V+ {
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc, ~" v$ ~. |) A1 |5 \
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd# `4 x# o- n! C1 F. e. H( i
如此種推，" ^6 c: ^; y) O5 P$ u4 m& y) b5 T
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???+ _7 P% s- o0 V6 `1 @
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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* Q/ J2 l) U" \+ Q: K

Originally posted by Triangel at 2007-4-18 01:26 PM:
1 Y) F) v. @5 g" s) o& ?(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc' M, d! c6 P% V
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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:$ D. u: M2 ]% c0 w
咁難既=.="" ]# Z$ Z4 ~5 o: w+ w

% ]. A- W6 M! L- f7 |[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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4 i. X, g! e7 j/ ]1 h9 yThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:3 X) d- A6 L: M- j" K
第一個答中有獎
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(x - ...

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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:
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& s$ C, Y9 n* O  ?' l5 a5 R7 X3 p; b  U: m+ x
(x-x)= 0 ，所以答案係0，is it?

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- ]! D  @& m/ A! B唔似a.math題# l8 T$ N% j* i9 p1 w0 O
似IQ題=.=
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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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' a1 r9 p( g$ _* ]( U(x-x)= 0 ，所以答案係0，is it?

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! u9 e# E. _8 v: z( S8 z+ KBingo~

waikong

我係學校個學生會單張見過" w2 d. O6 l$ ^9 N
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6 v, R3 _1 x  m* Z
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]