OpenStax, Algebra and Trigonometry 2e §12.4 Rotation of Axes · Example 5 · Geometry · Conic sections

Rewriting an Equation with respect to the x′ and y′ axes without the x′y′ Term

Rewrite the equation $8 x^{2} - 12 x y + 17 y^{2} = 20$ in the $x^{^{'}} y^{^{'}}$ system without an $x^{^{'}} y^{^{'}}$ term.

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OpenStax, Algebra and Trigonometry 2e · §12.4 Rotation of Axes · Example 5

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