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Lim X → 0 a M X − 1 B N X − 1 , N ≠ 0

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Question

\[\lim_{x \to 0} \frac{a^{mx} - 1}{b^{nx} - 1}, n \neq 0\]

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Solution

\[\lim_{x \to 0} \left( \frac{a^{mx} - 1}{b^{nx} - 1} \right)\]
\[ = \lim_{x \to 0} \left( \left( \frac{a^{mx} - 1}{mx} \right) \times \frac{mx}{\left( \frac{b^{nx} - 1}{nx} \right) \times nx} \right)\]
\[ = \frac{\log_e \left( a \right)}{\log_e \left( b \right)} \times \frac{m}{n}\]
\[ = \frac{m}{n} \frac{\log a}{\log b}\]

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Chapter 29: Limits - Exercise 29.1 [Page 71]

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R.D. Sharma Mathematics [English] Class 11
Chapter 29 Limits
Exercise 29.1 | Q 4 | Page 71

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