| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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(x - a) = x - a
! r$ D) m1 Y8 ^8 I8 c(x - a) (x - b) = x^2 – ax – bx + ab
. b% N4 k4 |( P' H& B* p1 s(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc2 W7 v. f! j1 V9 v( z
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
0 s- A$ C+ P& A$ x- l' {9 B: j3 d如此種推，. `' T: a9 |( i. K
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???( N8 G; O; d/ u5 n& \
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[ Last edited by Triangel on 2007-4-18 at 01:52 PM ]

Triangel

Originally posted by 大大 at 2007-4-18 01:41 PM:
2 }; O, a# _/ G& q# C) }咁難既=.="2 t6 b* M  G5 h# m

  i4 H- o1 v- a0 R. g[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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9 F% e! X4 j' v' t1 UThanks! 更正啦

Triangel

Originally posted by littlenic at 2007-4-18 01:54 PM:
  V" `, \4 ~, @. e% z
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(x-x)= 0 ，所以答案係0，is it?

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; B1 T5 f3 C4 V4 ]4 j' L( rBingo~