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Rotate the axes to eliminate the xy-term in the equation. Then write the equation in standard form.

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Rotate the axes to eliminate the xy-term in the equation. Then write the equation in standard form. (Use xp for x' and yp for y' in your answer. Rotate the coordinate axes through an angle θ with 0 ≤ θ ≤ π/2.)

2x2 + xy + 2y2  7 = 0

 

asked Nov 21 in TRIGONOMETRY by anonymous
reshown Nov 25 by bradely

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