| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎: ?8 z& ~! x: ~- F2 _; l, T+ |

% S' V6 L! h/ p& [6 X* F; _(x - a) = x - a* F. d! t2 w3 f  M! Q
(x - a) (x - b) = x^2 – ax – bx + ab
- r. v! e; u) @- p" f% g# H5 q(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
) ]. z/ P4 ?" Y5 S* U* ^, Z) j8 o" u(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd: F. J& Z8 H( U" k" K
如此種推，, [; l& h) f: |' U$ h% W6 Y+ g
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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6 p0 {2 j- S0 X% K[ 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
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Originally posted by Triangel at 2007-4-18 01:26 PM:, m8 _+ d6 h: V
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc- o! V* f) ~* t2 O0 y1 v# B
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% m; c' I' w# ]" a- v6 ^1 }' 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:
( n$ }& |9 c/ {3 T咁難既=.="6 U% Z. |9 w' D+ f% g7 e
# {  H0 G9 @: V
[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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# b. N! W$ X, d$ S. M2 h. _5 ~Thanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
! @5 w. G1 I' S$ D7 h/ {第一個答中有獎# Z* B; V" ^7 Y- x7 z
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(x - ...

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- u! K& m- p. W  H% `9 ?(x-x)= 0 ，所以答案係0，is it?

大大

Originally posted by littlenic at 2007-4-18 01:54 PM:& V  G" }3 |; s8 b% d' M

" [( F. h. B9 A+ }! ^4 ]9 ?7 d) [; U! `5 J; _* Q. A+ |0 u
(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題$ k4 B7 _5 b7 x* i+ t2 }
似IQ題=.=
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7 [8 N5 x/ R: [" R1 s  p[ 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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! ]2 U% |8 f+ P7 a' \6 I, o4 k/ E# D; p* F7 H
+ Q' N/ p( \6 P- P4 B8 P(x-x)= 0 ，所以答案係0，is it?

6 W8 ^1 \6 t% q! D2 M) y2 K7 G" }- Y) E# d& T. \
Bingo~

waikong

我係學校個學生會單張見過
! ~/ n& I1 a, e; `$ a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+ w5 L6 Z4 q) A  z

3 ~1 h* m# S  D# }5 S% V( F[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]