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UsukiDoll

  • one year ago

logarithm refresher question. So suppose I have... (will draw)

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  1. UsukiDoll
    • one year ago
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    |dw:1437812609759:dw|

  2. UsukiDoll
    • one year ago
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    or \[\LARGE \log(\frac{a}{b^2})\] and I want to use log rules to separate them

  3. UsukiDoll
    • one year ago
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    would the subtraction rule and the exponent rule be used at the same time?

  4. UsukiDoll
    • one year ago
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    ok yes that's the subtraction rule for that problem. so now I put the exponent 2 in the front right?

  5. UsukiDoll
    • one year ago
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    |dw:1437812695740:dw|

  6. UsukiDoll
    • one year ago
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    alright... I guess I got log rules and elevator rules confused (that's why it got mashed up) so use pure log rules even those the exponent is in the denominator?

  7. anonymous
    • one year ago
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    Yes what are elevator rules?

  8. UsukiDoll
    • one year ago
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    oh the elevator rule is for negative exponents. like for example suppose we have \[\LARGE x^{-2}\] since we can't have negative exponents we have to write it as \[\LARGE \frac{1}{x^2}\] as in bring it downstairs

  9. anonymous
    • one year ago
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    Using this Log Calculator http://www.acalculator.com/logarithm-calculator-logx-logarithmic-equations.html it is easiest to make calculation for logarithms.

  10. UsukiDoll
    • one year ago
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    now if we have something like \[\LARGE \frac{1}{x^{-2}}\] since negative exponents aren't allowed I have to change this.. bring it upstairs \[\LARGE x^{-(-2)} \rightarrow x^2 \]

  11. UsukiDoll
    • one year ago
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    @post thanks but I rather do them manually :)

  12. UsukiDoll
    • one year ago
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    @Deeezzzz why did you delete some of your posts? I wanna give you a medal

  13. UsukiDoll
    • one year ago
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    ok... let's have another example ummmm \[\LARGE \log(\frac{a^{6}b^{7}}{c^4})\]

  14. UsukiDoll
    • one year ago
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    alright so all 3 log rules are being used here.

  15. UsukiDoll
    • one year ago
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    \[\LARGE \log a^6+ \log b^7 -\log c^4 \] that's the first part

  16. UsukiDoll
    • one year ago
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    addition and subtraction rules being used.. now for exponents \[\LARGE 6\log a+ 7\log b -4 \log c\]

  17. UsukiDoll
    • one year ago
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    ah I get it.. pure log rules ^_^ and log rules only ^_^

  18. UsukiDoll
    • one year ago
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    cookie monster! :D

  19. mathmath333
    • one year ago
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    hello

  20. UsukiDoll
    • one year ago
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    @mathmath333 got any logs similar to what I did so I can practice?

  21. mathmath333
    • one year ago
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    yea

  22. UsukiDoll
    • one year ago
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    k.

  23. mathmath333
    • one year ago
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    \(\Large \color{black}{\begin{align} \log_{2} (9-2^{x})=10^{\log_{10} (3-x)} \end{align}}\)

  24. UsukiDoll
    • one year ago
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    not those -_-

  25. UsukiDoll
    • one year ago
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    the one you had earlier @mathmath333

  26. mathmath333
    • one year ago
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    only one question was there like that

  27. mathmath333
    • one year ago
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    any way that is also interesting question

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