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The function f(x)=(sec^(-1)x)/(sqrt(x)-[...

The function `f(x)=(sec^(-1)x)/(sqrt(x)-[x]),` where `[x]` denotes the greatest integer less than or equal to `x ,` is defined for all `x in ` `R` (b) `R-{(-1,1)uu{n"|"n in Z}}` `R^+-(0,1)` (d) `R^+-{n|n in N}`

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