| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a
  K5 P, i, ~% }(x - a) (x - b) = x^2 – ax – bx + ab, `( C0 z# y  v4 w; b! d. t+ r
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
3 `( W' ]4 ?& v/ I. ]8 |' }+ x(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd& h  f/ T1 w5 S6 K
如此種推，
7 C& g4 ~+ d7 j4 B5 J* Q7 j(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???
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4 N# t. \) \7 f* P% J. W% b1 g5 U[ 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:
. O) ]( \* i$ h& K1 k/ ]6 I(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc, m0 h+ J: ]! g9 V1 ^
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2 N  O% X% \0 z9 h: N; v. a[ 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:7 U; N  G+ R2 _
咁難既=.="$ D# ^* C9 s) G, `+ f' D- [8 f

) [6 T; X% L% P2 p, c# c' T: p; l: }" }[ 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:: r# j2 s8 s# k+ V. i& o, n+ X
第一個答中有獎% E8 a6 ~, J6 f! N  O

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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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# r# n( E0 Y$ Y4 j3 z(x-x)= 0 ，所以答案係0，is it?

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唔似a.math題( T6 u# q# \2 x; R' u# Q8 O1 K: m
似IQ題=.=/ k+ p; \9 r. Z( u$ M. e8 L

' }1 Y7 q( z0 l' W5 |& C[ 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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! Z  Y  T6 J6 @; @(x-x)= 0 ，所以答案係0，is it?

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% f4 B( V7 F1 c7 [9 yBingo~

waikong

我係學校個學生會單張見過) W: y2 n" j! u9 u7 z! E9 C
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$ i7 N  h9 i) h2 \8 y

7 `! ~- R8 S0 }  ~, ]這條問題，貼落吹水版，名副其實
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[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]