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If x ne 1 and f (x) = (x +1 )/( x-1)...

If ` x ne 1` and ` f (x) = (x +1 )/( x-1)` is a real function then fff (2) is

A

1

B

2

C

3

D

4

Text Solution

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The correct Answer is:
C
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Knowledge Check

  • If f (x) = (x + 1)/(x - 1) is a real function , x ne 1 , then f [f(2)] is . . . .

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    1
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    3
    D
    4

  • If f (x) satisfies the relation 2 f(x ) + f(1-x) =x^2 for all real x, then f (x) is

    A
    `(x^2 +2x -1)/( 6)`
    B
    `(x^2 +2x -1)/( 3)`
    C
    `(x^2+4x-1)/(3)`
    D
    `(x^2 -3x+1)/(6)`

  • The function f Satisfies the functional equation 3 f (x) +2f ((x+59 )/(x-1))=10 x +30 for all real x ne 1 . The value of f (7) is

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    8
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