Find the product of the perpendiculars d...

Find the product of the perpendiculars drawn from the point `(x_1,y_1)` on the lines `ax^2+2hxy+by^2=0`

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The correct Answer is:

`=(|ax_1^2+2hx_1y_1+by_1^2|)/sqrt({(a-b)^2+4h^2})`

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