1.

When the origin is shifted to (-2,-3) and the axes are rotated through an angle 45^(0), find the transformed equation of 2x^(2)+4xy-5y^(2)+20x-22y-14 = 0.

Answer»

`X^(2)-14xy-7y^(2)=2`
`x^(2)-14xy-7y^(2)=4`
`x^(2)-14xy+7y^(2)=2`
`x^(2)+14xy+7y^(2)=2`

ANSWER :A


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