| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎  I0 n0 l- j. p  C' h/ a
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(x - a) = x - a: Q' @1 _0 t" O" R! |8 i: B& H
(x - a) (x - b) = x^2 – ax – bx + ab
, w0 t0 m: z6 M* w& e(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc/ \4 w) `. U/ }* D* x8 g
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
" \" [8 M. D, j4 |$ O- N# c如此種推，
. _$ ^1 j+ B: P6 o& r6 T! S(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???! f) I9 f, ]- v0 t. s
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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" ]* N. {. A5 [/ D3 r

Originally posted by Triangel at 2007-4-18 01:26 PM:' k: S5 e8 p! g3 @) Q7 V
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc. n1 i* z; C) {7 |3 ^8 ]2 w
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- a: k: l8 E# u0 N  ?[ 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:
8 l3 C. H/ t# g0 \5 k咁難既=.="0 N# v0 R) H0 G4 \) h, N/ p

# }- r) {) x8 R  w4 z[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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! \) g. P. r: M3 Y8 Z, uThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:% }1 I, f& v1 Q; H6 V
第一個答中有獎
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0 t5 W: @$ `- N; u(x - ...

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& L. e. @7 f0 t% x+ D(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:7 o* `& m$ ^9 B6 Z& m: s
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7 G( l9 {/ i7 S. h$ j(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題. K0 Y' u% R6 P
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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(x-x)= 0 ，所以答案係0，is it?

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+ ~" H3 \% A' Q2 c2 r3 X7 tBingo~

waikong

我係學校個學生會單張見過' K: k- r1 [" p8 ^6 D& b2 y: D9 |
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" I$ z7 b# ]9 x5 p$ O; x  j! D) S
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]