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楼主 |
发表于 2014-1-5 15:29:02
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显示全部楼层
难怪你算不出来的,你的式子有理化展开
$-2*m*n*q*y-m^2*y+2*m*n*x-n^2*y+r^2*y=0$ (1)
$-m^4+2*m^2*n^2+2*m^2*r^2-n^4+2*n^2*r^2-r^4-p^2=0$(2)
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y^4+4*p^3*x^5*y+4*p^3*x*y^5-16*p*q^2*x^5*y-64*p*q^2*x^3*y^3-16*p*q^2*x*y^5+16*p*r^2*x^4*y^2+16*p*r^2*x^2*y^4-32*m*n*p*q*x^3*y-32*m*n*p*q*x*y^3+128*m*n*q*s*x^3*y+128*m*n*q*s*x*y^3+32*p*q*x^4*y^2+32*p*q*x^2*y^4+16*m*n*p*x^2*y^2-64*m*n*s*x^2*y^2-16*p*x^3*y^3=0 (3)
若需要化为${m,n,r,s,x,y}$的方程,对以上(1~3)消元${p,q}$得到的消元结果14444项之多,你想数值求解也是不太可能的! |
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