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If f: C->C is defined by f(x)=x^2 , writ...

If `f: C->C` is defined by `f(x)=x^2` , write `f^(-1)(-4)` . Here, `C` denotes the set of all complex numbers.

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`f: C arrow C` is defined by `f(x)=x^{2}`

Let `{f}^{-1}(4)={x}`

`Rightarrow {f}({x})=-4`

`Rightarrow {x}^{2}=-4 ldots ldots ldots ldots . . ldots[text { Given ] } `

`Rightarrow {x}^{2}+4=0`

...
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