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Let A={x in R :-4lt=xlt=4 and x!=0} and...

Let `A={x in R :-4lt=xlt=4` and `x!=0}` and `f: A->R` be defined by `f(x)=(|x|)/x` . Write the range of `fdot`

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Verified by Experts

`f(x)=frac{|x|}{x}`

If `x>0`

`|x|=x`

So, `frac{|x|}{x}=1`

If `x<0`

...
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RD SHARMA-FUNCTION-Solved Examples And Exercises
  1. If f: R->R defined by f(x)=3x-4 is invertible then write f^(-1)(x) .

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  9. Let f: R->R be defined as f(x)=(2x-3)/4 . Write fof^(-1)(1) .

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