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JEE Mains · Maths · STD 11 - 4.2 Quadratic equations and inequations

समीकरण \(\left(e^{2 x}-4\right)\left(6 e^{2 x}-5 e^x+1\right)=0\)के सभी वास्तविक मूलों का योगफल होगा

  1. A \(\log _{ c } 3\)
  2. B \(-\log _{e} 3\)
  3. C \(\log _{ e } 6\)
  4. D \(-\log _{e} 6\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(-\log _{e} 3\)

Step-by-step Solution

Detailed explanation

\(\left( e ^{2 x}-4\right)\left(6 e ^{2 x }-3 e ^{ x }-2 e ^{ x }+1\right)=0\) \(\left( e ^{2 x }-4\right)\left(3 e ^{ x }-1\right)\left(2 e ^{ x }-1\right)=0\) \(e ^{2 x }=4 \text { or }^{ x }=\frac{1}{3} \text { or }^{ x }=\frac{1}{2}\)…
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