\( \log _ { 5 } ^ { x ^ { 2 } + 3 x } \)
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Did you know that logarithms have their roots in the work of John Napier, who introduced them in the early 17th century to simplify complex calculations? His invention was a game-changer for astronomers and navigators who relied on accurate calculations for their work. Logarithms turned multiplication and division into easier addition and subtraction tasks! When working with logarithms, a common mistake is forgetting the change of base formula. If you ever need to convert \( \log_b(a) \) to a more manageable base (like 10 or \( e \)), you can use \( \log_b(a) = \frac{\log_k(a)}{\log_k(b)} \) where \( k \) can be any positive number. This makes calculations much smoother and opens up new realms of understanding for logarithmic functions!