
Ex 1.3
Ex 1.3, 2 Deleted for CBSE Board 2022 Exams
Ex 1.3, 3 (i) Important Deleted for CBSE Board 2022 Exams
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Ex 1.3, 13 (MCQ) Important Deleted for CBSE Board 2022 Exams You are here
Ex 1.3, 14 (MCQ) Important Deleted for CBSE Board 2022 Exams
Last updated at Aug. 6, 2021 by Teachoo
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