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pxc417

银虫 (初入文坛)

[交流] 【求助】能否从前面8个式子推导出第9个式子?

能否从前面8个式子推导出第9个式子?用计算机也行
a*(B-C)+b*(C-A)+c*(A-B)=0
x*(Y-Z)+y*(Z-x)+z*(X-Y)=0

a*(P-Y)+p*(Y-A)+Y*(A-P)=0
x*(P-B)+p*(B-X)+b*(X-P)=0

a*(Q-Z)+q*(Z-A)+z*(A-Q)=0
x*(Q-C)+q*(C-X)+c*(X-Q)=0

b*(R-Z)+r*(Z-B)+z*(B-R)=0
y*(R-C)+r*(C-Y)+c*(Y-R)=0

p*(Q-R)+q*(R-P)+r*(P-Q)=0

[ Last edited by laizuliang on 2008-6-27 at 19:52 ]
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