1.

If the magnitude of the coefficient of x^(7) in the expansion of (ax^(2) + (1)/(bx) )^(8), where a, b are positive numbers,is equal to the magnitude of the coefficient of x^(-7) in the expansion of (ax+(1)/(bx^(2)))^(8), then a and b are connected by the relation

Answer»

`AB=1`
`ab=2`
`a^(2) b=1`
`ab^(2) =2`

ANSWER :A


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