If the equation of a curve C is transformed to 9x^2+25y^2 = 225 bu=y the rotation of the coordinate axes about the origin through an angle \pi/4 in the positive direction then the equation of the curve C. , before the transformation is

Correct Answer is : 17x2 - 16xy + 17y2 = 225

AP EAMCET Engineering 21 Apr 2019 Shift 2 Paper

Section: Mathematics

Question : 43 of 160

Marks: +1, -0

If the equation of a curve C is transformed to 9x2+25y2 = 225 bu=y the rotation of the coordinate axes about the origin through an angle

in the positive direction then the equation of the curve C. , before the transformation is

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