How can I solve an equation with the unknown in both sides

Discussion in 'MATLAB' started by human, Oct 31, 2005.

  1. human

    human Guest

    foe example, is the equation is: m*K=(m*2*K^2-a*K^(3/2))/b*K^3

    how can I solve for K ?

    human, Oct 31, 2005
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  2. If we ignore the trivial solution of K == 0, ...

    Are a and m known?

    Then use fzero. Or, since with a transformation, its
    really just a polynomial in K, use roots. X = sqrt(K).

    Its not possible to solve symbolically, regardless if
    a and m are knowns. This is because it is effectively
    a polynomial in sqrt(K) of order greater than 4.

    John D'Errico

    The best material model of a cat is another, or preferably the same, cat.
    A. Rosenblueth, Philosophy of Science, 1945

    Those who can't laugh at themselves leave the job to others.
    John D'Errico, Oct 31, 2005
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