RS Aggarwal - Mathematics

Book: RS Aggarwal - Mathematics

Chapter: 3. Functions

Subject: - Class 11th

Q. No. 6 of Exercise 3B

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If then show that f [f{f(x)}] = x.


Need to prove: f[f{f(x)}] = x

Replacing x by f(x),

Now again replacing x by f(x) we get,


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If then show that