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-   -   Logarithms to the Base 10 (https://www.askmehelpdesk.com/showthread.php?t=503858)

  • Sep 1, 2010, 10:50 AM
    LynnM
    Logarithms to the Base 10
    Can anyone explain how [log_{b}x^{2}] / [log100] simplifies to log_{b}x? Please and thank you!
  • Sep 1, 2010, 10:39 PM
    Unknown008

    That's simple... :) look here:



    You know that 100 = 10^2, so:





    Recall that

  • Sep 2, 2010, 12:14 PM
    LynnM

    Oh, that really is simple! Thanks! What seems to be not-so-simple is LaTeX. I attempted to use it but it didn't show up in the same format as yours. This is what I typed: \frac{log_{b}x^{2}}{log100}. Did I go wrong somewhere? It worked in the practice box.
  • Sep 3, 2010, 08:42 AM
    Unknown008

    Yes, it is good. You only need the 'math' tabs now.

    That is, you put [/math] and [math] but in the reverse order. I can't put it in the correct order or everything between those tabs get into LaTeX format. If you can't understand, just press on 'Quote User' in my post above, or in this one:



    If you have one character to make subscript, or superscript, the { and } are not necessary. For example,

    \log_b gives

    log_10 gives

    log_{10} gives

    One last thing, if you have simple fractions, that is numerical one digit numerator and one digit denominator,

    \frac12 gives

    but

    \frac1 23 gives
  • Sep 3, 2010, 09:07 AM
    LynnM

    That stuff is so neat! I will give it a try again. I'm pretty sure I understand what you mean about the reverse order! Let's see... . Hmm, it doesn't change when I click preview.:confused: Perhaps I have to submit it first. I'll give that a try... fingers crossed!
  • Sep 3, 2010, 09:08 AM
    LynnM

    Yay! Thanks! (I'm really quite excited about this!)

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