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If f: Q->Q is given by f(x)=x^2 , then f...

If `f: Q->Q` is given by `f(x)=x^2` , then find `f^(-1)(9)`

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`f(x) = x^2`
Replace f(x) by y,
`y = x^2`
`x = sqrty`
take x by `f^(-1)x` and `y` by `x`.
`f-1x = sqrtx`
` f-1(9) = sqrt9`
` = ± 3`
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RD SHARMA-FUNCTION-Solved Examples And Exercises
  1. If f: Q->Q is given by f(x)=x^2 , then find f^(-1)(9)

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  2. If f: Q->Q is given by f(x)=x^2 , then find f^(-1)(-25)

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  3. If f: Q->Q is given by f(x)=x^2 , then find f^(-1)(9)

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  4. If the function f: R->R be defined by f(x)=x^2+5x+9 , find f^(-1)(8) a...

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  5. If the function f: C->C be defined by f(x)=x^2-1 , find f^(-1)(9) and ...

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  6. Let f: R->R be defined as f(x)=x^2+1 . Find: f^(-1)(10)

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