| TriTri | A-Math 加分題 |

Triangel

第一個答中有獎
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+ z2 i$ M& G3 T6 t(x - a) = x - a
, `5 v' ]! {2 d$ H( G' \' A(x - a) (x - b) = x^2 – ax – bx + ab
9 t( ^% J- K5 b1 F  W* B$ u; a- _(x - a) (x - b) (x – c) =  x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc
" B  Y2 G2 R% X% ^) d/ D/ ^(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd
3 B2 g5 P- S' b- l" L* s' O如此種推，
6 d7 \0 `! I3 h; p! L& ^3 E1 Q(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 ]

Triangel

Originally posted by 大大 at 2007-4-18 01:41 PM:
2 I2 g8 k, q% r2 f3 K8 m. E' v咁難既=.="& p0 F$ _& e4 U% G6 w" t# V
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[ Last edited by 大大 on 2007-4-18 at 01:52 PM ]

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Thanks! 更正啦

Triangel

Originally posted by littlenic at 2007-4-18 01:54 PM:
( {0 x) M  N0 x7 m4 n, d$ E7 o0 _$ u. v6 g" p

) _& ~. d) O) o& p( z(x-x)= 0 ，所以答案係0，is it?

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  I% @1 D3 a5 S1 e, a  Z( Q) FBingo~