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Please explain it, Prove thet the straight line lx + my + n =0 is a normal to the ellipse b^2x^2 + a^2y^2 = a^2b^2 if (a^2 / l^2)+ (b^2 / m^2) = (a^2 - b^2)^2 / (n^2)

Please explain it, 
 
Prove thet the straight line lx + my + n =0 is a normal to the ellipse b^2x^2 + a^2y^2 = a^2b^2 if (a^2 / l^2)+ (b^2 / m^2) = (a^2 - b^2)^2 / (n^2)

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Grade:12

1 Answers

Deepak Kumar Shringi
askIITians Faculty 4405 Points
3 years ago
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