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OpenStudy (anonymous):
Can someone help me graph this quadratic surface
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OpenStudy (anonymous):
f(x,y)=4x^2+y^2+1, i am really intrested in graphing in z=k, where k is some constant
OpenStudy (anonymous):
i guess for each plane z=k this is a elipse. And when u get higher (k bigger) elipse is also getting bigger.
OpenStudy (callisto):
perhaps wolf can help :D http://www.wolframalpha.com/input/?i=f%28x%2Cy%29%3D4x%5E2%2By%5E2%2B1
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