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  • The equation of the chord of contact of tangents from (2, 3) to the rectangular hyperbola xy = 9 is   Option: 1</s

The equation of the chord of contact of tangents from (2, 3) to the rectangular hyperbola xy = 9 is 

 

Option: 1

3x + 2y = 18

 


Option: 2

2x – 3y = 18


Option: 3

2x + 3y = 9


Option: 4

3x + 2y = 9


Answers (1)

best_answer

\mathrm{T}=0 \Rightarrow \mathrm{xy}_1+\mathrm{yx}_1=18 \Rightarrow 3 \mathrm{x}+2 \mathrm{y}=18

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Gaurav

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