1. Chapter 1 Class 12 Relation and Functions (Term 1)
  2. Serial order wise
  3. Ex 1.3

Ex 1.3 , 13 - Chapter 1 Class 12 Relation and Functions (Term 1)

Last updated at Jan. 28, 2020 by

Ex 1.3, 13 - f(x) = (3 - x3)1/3, then fof (x) is (A) x1/3

Ex 1.3 , 13 - Chapter 1 Class 12 Relation and Functions - Part 2

  1. Chapter 1 Class 12 Relation and Functions (Term 1)
  2. Serial order wise

    3. Ex 1.3

    Ex 1.4 →

Transcript

Ex 1.3, 13 If f: R → R be given by f(x) = 〖"(3 – x3)" 〗^(1/3) , then fof(x) is (A) "x" ^(1/3) (B) x3 (C) x (D) (3 – x3) f(x) = 〖"(3 – x3)" 〗^(1/3) f(f(x)) = 〖"(3 – f(x)3)" 〗^(1/3) fof(x) = ("3 – " 〖"(3 – x3)" 〗^(𝟏/𝟑 × 𝟑) )^(1/3) = ("3 – " 〖"(3 – x3)" 〗^1 )^(1/3) = ("3 – 3 + x3" )^(1/3) = ("x3" )^(1/3) = x Hence fof(x) = x So, C is the correct answer

Chapter 1 Class 12 Relation and Functions (Term 1)
Serial order wise

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.