1.

If the tangent and the normal to a rectangular hyperbola xy = c^(2) , at apoint , cuts off intercepts a_(1)" and " a_(2) on the x- axis and b_(1) b_(2) on the y- axis, then a_(1)a_(2) + b_(1) b_(2) is equal to

Answer»

2
`(1)/(2)`
0
-1

Answer :C


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