| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎- i) t& v3 `8 \& ^
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(x - a) = x - a
  j) ]$ r3 ^- l( h+ N/ `: J(x - a) (x - b) = x^2 – ax – bx + ab/ v$ A9 v- s! Q
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc8 p( g( q$ ~( c- `) V1 m
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd, d6 s% d( n+ ~' o5 _3 s
如此種推，
" X/ S* j+ x4 U+ T- j(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) c7 @1 @, x' W/ f4 {9 [$ r

Originally posted by Triangel at 2007-4-18 01:26 PM:
9 }8 w" z8 k* m! e8 F5 i(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc  ]7 |$ F% {3 O- `' B/ f  w& K
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0 _0 t& Y8 J2 m: c* t[ 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:
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4 O+ j5 R; h6 M$ @8 D[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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+ F- U* _5 w# WThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:
1 m1 @' }/ W% ^# o9 {3 G% f第一個答中有獎1 V# e# l- o4 M' }

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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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(x-x)= 0 ，所以答案係0，is it?

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$ N4 g- `  ?; K9 s0 c唔似a.math題7 e" C$ W& y  t6 i& H9 x$ D
似IQ題=.=
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1 L- \# p! ]0 i1 k: I# }, X[ 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:, f: x7 n9 v0 h/ {1 x

! @2 t& w* x* I! o, ~0 ^; H- ^: y0 O! E. `' u2 D
(x-x)= 0 ，所以答案係0，is it?

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Bingo~

waikong

我係學校個學生會單張見過. R% u% `" ^/ q3 G4 t/ x" 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.........
1 q8 Y9 E9 `4 \6 x* i- ^1 i, n2 ?, |. p7 }" l; a1 M! s
這條問題，貼落吹水版，名副其實
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. m3 ]5 K8 x5 [( k[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]