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yuejian0518

银虫 (初入文坛)

Maxima的结果

(%i1) to_poly_solve([a*x^3+b*x^2+c*x+d], [x]);
to_poly_solve: to_poly_solver.mac is obsolete; I'm loading to_poly_solve.mac instead.
Loading maxima-grobner $Revision: 1.6 $ $Date: 2009-06-02 07:49:49 $
(%o1) %union([x=(sqrt(27*a^2*d^2+(4*b^3-18*a*b*c)*d+4*a*c^3-b^2*c^2)/(2*3^(3/2)*a^2)-(27*a^2*d-9*a*b*c+2*b^3)/(54*a^3))^(1/3)-(3*a*c-b^2)/(9*a^2*(sqrt(27*a^2*d^2+(4*b^3-18*a*b*c)*d+4*a*c^3-b^2*c^2)/(2*3^(3/2)*a^2)-(27*a^2*d-9*a*b*c+2*b^3)/(54*a^3))^(1/3))-b/(3*a)],[x=(-(sqrt(3)*%i)/2-1/2)*(sqrt(27*a^2*d^2+(4*b^3-18*a*b*c)*d+4*a*c^3-b^2*c^2)/(2*3^(3/2)*a^2)-(27*a^2*d-9*a*b*c+2*b^3)/(54*a^3))^(1/3)-(((sqrt(3)*%i)/2-1/2)*(3*a*c-b^2))/(9*a^2*(sqrt(27*a^2*d^2+(4*b^3-18*a*b*c)*d+4*a*c^3-b^2*c^2)/(2*3^(3/2)*a^2)-(27*a^2*d-9*a*b*c+2*b^3)/(54*a^3))^(1/3))-b/(3*a)],[x=((sqrt(3)*%i)/2-1/2)*(sqrt(27*a^2*d^2+(4*b^3-18*a*b*c)*d+4*a*c^3-b^2*c^2)/(2*3^(3/2)*a^2)-(27*a^2*d-9*a*b*c+2*b^3)/(54*a^3))^(1/3)-((-(sqrt(3)*%i)/2-1/2)*(3*a*c-b^2))/(9*a^2*(sqrt(27*a^2*d^2+(4*b^3-18*a*b*c)*d+4*a*c^3-b^2*c^2)/(2*3^(3/2)*a^2)-(27*a^2*d-9*a*b*c+2*b^3)/(54*a^3))^(1/3))-b/(3*a)])

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11楼2014-07-28 16:08:11
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309065816

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11楼: Originally posted by yuejian0518 at 2014-07-28 16:08:11
Maxima的结果

(%i1) to_poly_solve(, );
to_poly_solve: to_poly_solver.mac is obsolete; I'm loading to_poly_solve.mac instead.
Loading maxima-grobner $Revision: 1.6 $ $Date: 2009-06-02 07:49:49 $
...

谢谢!
12楼2014-07-29 12:49:20
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