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Sequences and Series question

2020 · 8 Jan · Shift 1 · Q38
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  5. /2020 · 8 Jan · Shift 1 · Q38

Sequences and Series question

2020 · 8 Jan · Shift 1 · Q38

JEE MainMathematicsSequences and SeriesMCQ+4 / −1
Let ƒ : R →\to→ R be such that for all x ∈\in∈ R (21+x + 21–x), ƒ(x) and (3x + 3–x) are in A.P., then the minimum value of ƒ(x) is
  1. A
    2
  2. B
    0
  3. C
    3
  4. D
    4
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