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I am trying to solve the following NON linear system:

    NSolve[(5/
      10)*((4*Pi*Cos[(2*Pi*y)/(Sqrt[3]*(246/100))]*
        Sin[(2*Pi*x)/(246/100)])/(246/100)) + (25/16)*(x + 0) == 
  0, {x, y}, Reals]

Butit seems that mathemathica do not converge.

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closed as unclear what you're asking by Szabolcs, Kuba, m_goldberg, rm -rf Sep 24 '13 at 4:26

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question.If this question can be reworded to fit the rules in the help center, please edit the question.

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You have a single equation with two variables, thus there are uncountably many solutions. You'll see that $x=0$ is a solution for any $y$. –  Szabolcs Sep 19 '13 at 17:26

1 Answer 1

Try Reduce instead of Solve

eq = (5/10)*((4*Pi*Cos[(2*Pi*y)/(Sqrt[3]*(246/100))]*
        Sin[(2*Pi*x)/(246/100)])/(246/100)) + (25/16)*(x + 0) == 0

enter image description here

Reduce[eq, {x, y}]

enter image description here

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Ok. In fact this was a test, the really model that i am studying consist of two coupled equation very similar –  locometro Sep 19 '13 at 18:04
    
let me improve the question, now I want to solve the coupled non linear equations, for a list like that: Table[i, {i, 0, 10, 0.02}] and using the follwing lines -NSolve[(Subscript[V, z] (4 [Pi] Sin[(2 [Pi] x)/a] Cos[(2 [Pi] y)/(Sqrt[3] a)]))/ a + k (x + #) == 0 && Subscript[V, z] ((4 [Pi] Cos[(2 [Pi] x)/a] Sin[(2 [Pi] y)/(Sqrt[3] a)])/( Sqrt[3] a) + (4 [Pi] Sin[(4 [Pi] y)/(Sqrt[3] a)])/( Sqrt[3] a)) + k (y + #) == 0, {x, y}, Reals] /. {a -> 246/100, k -> 25/16, Subscript[V, z] -> 5/10}] –  locometro Sep 19 '13 at 18:14
1  
Dear @user7096 - if you want to improve your question, please edit it using the "edit" link at the bottom of the question. –  Verbeia Sep 19 '13 at 23:16
    
Oh thaks, I was litlle confuse how to reply. –  locometro Sep 23 '13 at 13:24

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