AP EAMCET · Maths · Functions
If is defined as find
- A
- B
- C
- D
Answer & Solution
Correct Answer
(C)
Step-by-step Solution
Detailed explanation
Given, fx=2020-x201912019 Now, f∘fx=ffx=2020-2020-x201912019201912019 ⇒f∘fx=x201912019=x Now, f∘f∘fx=ff∘fx=fx Now, f∘f∘f∘fx=ff∘f∘fx=ffx=x So, f∘f∘f∘f20192020=20192020
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