1.

The curve defined by sqrt((x)/(a))+sqrt((y)/(b))=1gives a part of parabola bounded by rectangle0lexlea,0leyleb. That has x - axis as tangent at A(a,0) and y- axis as tangent at B(0.b).On the basis of above information , answer the following questions :The corrdiantes of focus of parabola is -

Answer»

`((AB)/(a+B),(ab)/(a+b))`
`((ab^(2))/(a^(2)+b^(2)),(a^(2)b)/(a^(2)+b^(2)))`
`((a^(2)b)/(a^(2)+b^(2)),(ab^(2))/(a^(2)+b^(2)))`
`((a^(2)b^(2))/(a^(2)+b^(2)),(a^(2)b^(2))/(a^(2)+b^(2)))`

ANSWER :B


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