फलन f(x) = 3x का डोमेन क्या है?

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NDA (Held On: 18 Apr 2021) Maths Previous Year paper
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  1. (-∞, ∞)
  2. (0, ∞)
  3. [0, ∞)
  4. (-∞, ∞) - {0}

Answer (Detailed Solution Below)

Option 1 : (-∞, ∞)
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अवधारणा:

डोमेन x के सभी संभावित मान का समुच्चय होता है जिसका f(x) का परिमित मूल्य होता है।

गणना:

दिया गया है कि फलन f(x) = 3x

फलन का सभी x ∈ (-∞, ∞) के लिए एक सीमित मान होगा

Mistake Pointsदिए गए फलन का परिसर (0,∞). 0 से होगा। जब x = -∞, और ∞ जब x = ∞ है।

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