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  1. What is the best way to calculate log without a calculator?

    Aug 14, 2020 · As the title states, I need to be able to calculate logs (base $10$) on paper without a calculator. For example, how would I calculate $\\log(25)$?

  2. Natural log of a negative number - Mathematics Stack Exchange

    Jan 10, 2021 · My teacher told me that the natural logarithm of a negative number does not exist, but $$\ln (-1)=\ln (e^ {i\pi})=i\pi$$ So, is it logical to have the natural logarithm of a negative …

  3. What is the point of logarithms? How are they used? [closed]

    Logarithms are defined as the solutions to exponential equations and so are practically useful in any situation where one needs to solve such equations (such as finding how long it will take …

  4. logarithms - Log of a negative number - Mathematics Stack …

    Jan 9, 2017 · You'll need to complete a few actions and gain 15 reputation points before being able to upvote. Upvoting indicates when questions and answers are useful. What's reputation …

  5. Multiplying two logarithms (Solved) - Mathematics Stack Exchange

    Apr 30, 2016 · I was wondering how one would multiply two logarithms together? Say, for example, that I had: $$\\log x·\\log 2x < 0$$ How would one solve this? And if it weren't …

  6. logarithms - Interpretation of log differences - Mathematics Stack …

    Aug 19, 2013 · I have a very simple question. I am confused about the interpretation of log differences. Here a simple example: $$\\log(2)-\\log(1)=.3010$$ With my present …

  7. logarithms - Dividing logs with same base - Mathematics Stack …

    Problem $\\dfrac{\\log125}{\\log25} = 1.5$ From my understanding, if two logs have the same base in a division, then the constants can simply be divided i.e $125/25 = 5$ to result in …

  8. logarithms - Is $\log0$ defined or not? - Mathematics Stack …

    Nov 21, 2019 · Continue to help good content that is interesting, well-researched, and useful, rise to the top! To gain full voting privileges,

  9. logarithms - Why does a base of Log or exponential function have …

    Oct 26, 2021 · Explore related questions functions logarithms See similar questions with these tags.

  10. logarithms - What is the difference between logarithmic decay vs ...

    Nov 8, 2013 · I am a little unclear on whether they are distinctly different or whether this is a 'square is a rectangle, but rectangle is not necessarily a square' type of relationship.