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JEE Mains · Maths · STD 12 - 6. Application of derivatives

\(f ( x )= a ^{ a ^{ x }}+ a ^{1- a ^{ x }}\), जहाँ \(a , x \in R\) तथा \(a >0\), हैं, का न्यूनतम मान बराबर है

  1. A \(2 a\)
  2. B \(2 \sqrt{ a }\)
  3. C \(a +\frac{1}{ a }\)
  4. D \(a +1\)
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Answer & Solution

Correct Answer

(B) \(2 \sqrt{ a }\)

Step-by-step Solution

Detailed explanation

\(A.M.\) \(\geq\) \(G.M.\) \(f(x)=a^{a^{x}}+a^{1-a^{x}}=a^{a^{x}}+\frac{a}{a^{a^{x}}} \geq 2 \sqrt{a}\)
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