| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎  Q3 ^4 u) L+ V! y: e! p1 l' N

1 t" G$ ^5 I6 S% `(x - a) = x - a
0 @) |) K& D$ `(x - a) (x - b) = x^2 – ax – bx + ab" O( e& ]7 e8 c" |; _) v
(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc+ t3 s$ `. [4 u  t: X8 @
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd8 w5 q, ]' s! _9 e4 t- h. [1 k; ^
如此種推，9 i! n: Z8 F9 F" 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
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Originally posted by Triangel at 2007-4-18 01:26 PM:
9 E( z4 E+ l0 E* b(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 – abx + acx + bcx - abc" u. D# |) z: A8 ]4 j( n7 v

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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:% V- V  O* O) }5 c8 F0 E8 m
咁難既=.="
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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% U2 M& q6 k! X: _- J4 z. \) p( LThanks! 更正啦

littlenic

Originally posted by Triangel at 2007-4-18 01:26 PM:( s+ B* E3 Q, s& \0 E6 t: Z' K
第一個答中有獎4 H: @6 ~6 n. c6 D# H" q7 s

! \; S$ F" }9 {7 n# z(x - ...

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9 h; x  R& P9 K) k" L(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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% s( ~) D* h8 a* u  [& e8 S(x-x)= 0 ，所以答案係0，is it?

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% C: ]5 ?/ w/ n  p4 C/ M唔似a.math題, w: p* f7 i1 q
似IQ題=.=! \" s0 M. @5 J  k$ c( \8 f
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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:( X, Q2 V7 h1 F$ M+ O. S4 n
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(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7 t4 ]( m1 C& v5 W( b( i
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.........5 v, z7 w$ [& @# ^+ P
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這條問題，貼落吹水版，名副其實
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1 J2 N6 l$ l7 i4 O[ Last edited by karen0123 on 2007-4-18 at 05:51 PM ]