1.

If the normals drawn to the hyperbola xy = 4 at (alpha_(i), beta_(i)) (i = 1,2,3,4) are concurrentat the point (a, b), then ((alpha_(1) + alpha_(2) + alpha_(3) + alpha_(4)))/((beta_(1) + beta_(2) + beta_(3) + beta_(4)))(alpha_(1)alpha_(2)alpha_(3)alpha_(4)) =

Answer»

`(-16B)/(a)`
`(-16a)/(b)`
`(4B)/(a)`
`(4A)/(b)`

Answer :B


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