Let A be a symmetric 2 \times 2 matrix and let k be a scalar. Prove that the graph of the quadratic equation x^T Ax=k is ,an ellipse, circle

nitraiddQ 2021-08-10 Answered
Let A be a symmetric \(\displaystyle{2}\times{2}\) matrix and let k be a scalar. Prove that the graph of the quadratic equation \(\displaystyle{x}^{{T}}\) Ax=k is ,an ellipse, circle, or imaginary conic if \(\displaystyle{k}\ne{q}{0}\) and det A > 0
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Raheem Donnelly
Answered 2021-08-11 Author has 19853 answers
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