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Question

Find the polar of the point (4, - 1) with respect to the circle 2x2+2y2=11.

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Solution

Polar of the point (x1,y1) with respect to the circle 2x2+2y2=11 is given by 2xx1+2yy1=11
Substituting the point (4,1) into the equation will give 2x(4)+2y(1)=11
i.e. 8x2y=11 is the required polar.

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