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If f(x)=(x-1)/(x+1) , then f(f(a x)) in ...

If `f(x)=(x-1)/(x+1)` , then `f(f(a x))` in terms of `f(x)` is equal to `(a)(f(x)-1)/(a(f(x)-1))` (b) `(f(x)+1)/(a(f(x)-1))` `(f(x)-1)/(a(f(x)+1))` (d) `(f(x)+1)/(a(f(x)+1))`

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Knowledge Check

  • If f(x) -1/x , then f(a)+ f((1)/(a))=

    A
    0
    B
    `2a-2/a`
    C
    `a-1/a`
    D
    `(a^4-a^2+1)/(a(a^2-1))`

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