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If f(x) = x/(sqrt(1+x^2) then fofof(x)...

If `f(x) = x/(sqrt(1+x^2)` then `fofof(x)`

A

`(3x)/(sqrt(1+x^(2)))`

B

`(x)/(sqrt(1+3x^(2)))`

C

`(3x)/(sqrt(1-x^(2)))`

D

None of these

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • Let f : R rarr R be defined by f(x) = x/sqrt(1+x^2) , then (fofof)(x) is

    A
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    B
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    D
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    C
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    D
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  • If f(x) =(x-4)/(2sqrt(x)) , then f^(')(1) is equal to

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    `5/4`
    B
    `4/5`
    C
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    D
    0

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