Question:medium

The values of \( a \), if \( f(x) = 2e^x - a e^{-x} + (2a+1)x - 3 \) increases for all \( x \), are in

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For expressions like \(e^x\) and \(e^{-x}\), substitute \(t=e^x\) and apply AM-GM.
Updated On: Apr 16, 2026
  • \([0,\infty)\)
  • \((-\infty,0]\)
  • \((-\infty,\infty)\)
  • \((1,\infty)\)
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The Correct Option is A

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