contourplot(sqrt(x^2+y^2-4)/(3x+y), -2/sqrt(10)-1

contourplot(sqrt(x^2+y^2-4)/(3x+y), -2/sqrt(10)-1<x<2/sqrt(10)+1, 6/sqrt(10)-3<y<6/sqrt(10)+3)); - Wolfram|Alpha
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contourplot(sqrt(x^2+y^2-4)/(3x+y), -2/sqrt(10)-1<x<2/sqrt(10)+1, 6/sqrt(10)-3<y<6/sqrt(10)+3));
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Interpreting as: contourplot(sqrt(x^2+y^2-4)/(3x+y), -2/sqrt(10)-1
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-2/sqrt(10)-1
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http://www.wolframalpha.com/input/?i=contourplot%28sqrt%28x%5E2…%2B1%2C+6%2Fsqrt%2810%29-3%3Cy%3C6%2Fsqrt%2810%29%2B3%29%29%3B
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contourplot(sqrt(x^2+y^2-4)/(3x+y), -2/sqrt(10)-1<x<2/sqrt(10)+1, 6/sqrt(10)-3<y<6/sqrt(10)+3)); - Wolfram|Alpha
13-09-26 11:52 AM
http://www.wolframalpha.com/input/?i=contourplot%28sqrt%28x%5E2…%2B1%2C+6%2Fsqrt%2810%29-3%3Cy%3C6%2Fsqrt%2810%29%2B3%29%29%3B
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