| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎, I3 s, u! F7 n& K+ f- |

( k; r0 a+ o, K. D4 G+ |(x - a) = x - a
5 n, [. D$ p' {) P- }(x - a) (x - b) = x^2 – ax – bx + ab6 ~) D2 j7 m8 f
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc  o" w! b# q  G  }0 y+ n  W& ~: a$ A
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd3 `0 d/ d% Z( o! Q6 M6 i! C
如此種推，
# Q$ C. ?& A5 b2 H(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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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. I9 \9 s9 b) J; v$ e. O

Originally posted by Triangel at 2007-4-18 01:26 PM:
5 t1 l, |+ l' e: [(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc6 ]; P3 A; O, t

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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:" |, S, @8 ?+ s, h* s: p; ?
咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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! S/ ]+ U" K( a9 B# B- y3 a0 d  SThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
3 Z1 M  W0 z) a' ]/ V第一個答中有獎
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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:2 b2 f; x( N% e

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(x-x)= 0 ，所以答案係0，is it?

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& B; w; x+ i) _6 C8 z9 q唔似a.math題
2 D6 A) O6 a2 [似IQ題=.=
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& I6 D; m, ]. ~2 c) L" o: g[ 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:5 G3 p& `! D0 U5 e

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(x-x)= 0 ，所以答案係0，is it?

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6 D, f7 E$ ^5 h. {9 E9 ?Bingo~

waikong

我係學校個學生會單張見過# }) |/ D  x2 P: Q. v& \
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.........; I& e6 t1 ^' a! P6 W
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這條問題，貼落吹水版，名副其實" I( x6 h6 ~* n3 ^

, ]7 q5 A* S9 c" J& ]3 \; q[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]