CBSE Class 12 Math 2020 Outside Delhi Set 1 Solved Paper

In Q. Nos. 11 to 15, fill in the blanks with correct word / sentence :

Question : 11

Total: 36

If f:R→R be given by f(x)=(3−x3)1∕3, then fof(x)=____

Solution: 👈: Video Solution

f(x)=(3−x3)1∕3
Now, fof (x)=f[f(x)]
=[3−(f(x))3]1∕3
=[3−((3−x3)1∕3)3]1∕3
=(x3)1∕3=x

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