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JEE Mains · Maths · STD 11 - 12. limits

माना किसी \(\alpha \in R\) के लिए \(\beta=\lim _{x \rightarrow 0} \frac{\alpha x-\left(e^{3 x}-1\right)}{\alpha x\left(e^{3 x}-1\right)}\) है। तो \(\alpha+\beta\) का मान है :

  1. A \(\frac{14}{5}\)
  2. B \(\frac{3}{2}\)
  3. C \(\frac{5}{2}\)
  4. D \(\frac{7}{2}\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(\frac{5}{2}\)

Step-by-step Solution

Detailed explanation

\(\beta=\lim _{x \rightarrow 0} \frac{\alpha x-\left(e^{3 x}-1\right)}{\alpha x\left(e^{3 x}-1\right)}\) \(\beta=\lim _{x \rightarrow 0} \frac{1+\alpha x-\left[1+3 x+\frac{9 x^{2}}{2 !}+\ldots .\right]}{(\alpha x) \frac{\left(e^{3 x}-1\right)}{3 x} 3 x}\)…
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