A) \[\{2\}\]
B) \[\{2,2\omega ,2{{\omega }^{2}}\}\]
C) \[\{2,-2\}\]
D) \[\{2,2\}\]
Correct Answer: A
Solution :
Let \[y=f(x)={{x}^{3}}\] \[\therefore \] \[x={{y}^{1/3}}\] \[\Rightarrow \] \[{{f}^{-1}}(x)={{x}^{1/3}}\] \[\Rightarrow \] \[{{f}^{-1}}(8)={{(8)}^{1/3}}\] \[=2\]You need to login to perform this action.
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