Prove that the equation of tangent of the ellipse `x^(2)/a^(2)+y^(2)/b^(2) = 1\" at point \"(x`.
Channel: Doubtnut
Date: 2019-12-29

Prove that the equation of tangent of the ellipse `x^(2)/a^(2)+y^(2)/b^(2) = 1\" at point \"(x_(1),y_(1)) is (xx_(1))/a^(2) + (yy_(1))/b^(2)=1`.