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1#
發表於 2007-4-18 01:26 PM
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| TriTri | A-Math 加分題 |
第一個答中有獎
p/ K4 H2 q2 J( K/ _) ]0 c8 \
1 N/ @& ?4 \, y: D! i3 C& d(x - a) = x - a
* |) w0 _; ?* `, X/ d3 \(x - a) (x - b) = x^2 – ax – bx + ab
: m# X; Q2 \/ ]( \+ s(x - a) (x - b) (x – c) = x^3 – ax^2 – bx^2 – cx^2 + abx + acx + bcx - abc \. V1 {% H) P4 l
(x - a) (x - b) (x – c) (x - d) = x^4 – ax^3 – bx^3 – cx^3 – abx^2……………….. +abcd+ }8 w m- d G8 R
如此種推,1 N! T, D8 n5 S; t, i+ R1 x
(x-a) (x-b) (x-c) (x-d) (x-e)……..(x-z) = ???* i( D, `. t! E+ P; C8 N. w
" i& [0 @) A$ A8 o
[ Last edited by Triangel on 2007-4-18 at 01:52 PM ] |
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