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

फलन \(f ( x )= xe ^{ x (1- x )}, x \in R\),

  1. A \(\left(-\frac{1}{2}, 1\right)\) में वर्धमान है
  2. B \(\left(\frac{1}{2}, 2\right)\) में हांसमान है
  3. C \(\left(-1,-\frac{1}{2}\right)\) में वर्धमान है
  4. D \(\left(-\frac{1}{2}, \frac{1}{2}\right)\) में हांसमान है
Verified Solution

Answer & Solution

Correct Answer

(A) \(\left(-\frac{1}{2}, 1\right)\) में वर्धमान है

Step-by-step Solution

Detailed explanation

\(f(x)=x e^{x(1-x)}\) \(f^{\prime}(x)=-e^{x(1-x)}(2 x+1)(x-1)\) \(f ( x )\) is increasing in \(\left(-\frac{1}{2}, 1\right)\)
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