UsukiDoll
  • UsukiDoll
logarithm refresher question. So suppose I have... (will draw)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
UsukiDoll
  • UsukiDoll
|dw:1437812609759:dw|
UsukiDoll
  • UsukiDoll
or \[\LARGE \log(\frac{a}{b^2})\] and I want to use log rules to separate them
UsukiDoll
  • UsukiDoll
would the subtraction rule and the exponent rule be used at the same time?

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UsukiDoll
  • UsukiDoll
ok yes that's the subtraction rule for that problem. so now I put the exponent 2 in the front right?
UsukiDoll
  • UsukiDoll
|dw:1437812695740:dw|
UsukiDoll
  • UsukiDoll
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?
anonymous
  • anonymous
Yes what are elevator rules?
UsukiDoll
  • UsukiDoll
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
anonymous
  • anonymous
Using this Log Calculator http://www.acalculator.com/logarithm-calculator-logx-logarithmic-equations.html it is easiest to make calculation for logarithms.
UsukiDoll
  • UsukiDoll
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 \[\LARGE x^{-(-2)} \rightarrow x^2 \]
UsukiDoll
  • UsukiDoll
@post thanks but I rather do them manually :)
UsukiDoll
  • UsukiDoll
@Deeezzzz why did you delete some of your posts? I wanna give you a medal
UsukiDoll
  • UsukiDoll
ok... let's have another example ummmm \[\LARGE \log(\frac{a^{6}b^{7}}{c^4})\]
UsukiDoll
  • UsukiDoll
alright so all 3 log rules are being used here.
UsukiDoll
  • UsukiDoll
\[\LARGE \log a^6+ \log b^7 -\log c^4 \] that's the first part
UsukiDoll
  • UsukiDoll
addition and subtraction rules being used.. now for exponents \[\LARGE 6\log a+ 7\log b -4 \log c\]
UsukiDoll
  • UsukiDoll
ah I get it.. pure log rules ^_^ and log rules only ^_^
UsukiDoll
  • UsukiDoll
cookie monster! :D
mathmath333
  • mathmath333
hello
UsukiDoll
  • UsukiDoll
@mathmath333 got any logs similar to what I did so I can practice?
mathmath333
  • mathmath333
yea
UsukiDoll
  • UsukiDoll
k.
mathmath333
  • mathmath333
\(\Large \color{black}{\begin{align} \log_{2} (9-2^{x})=10^{\log_{10} (3-x)} \end{align}}\)
UsukiDoll
  • UsukiDoll
not those -_-
UsukiDoll
  • UsukiDoll
the one you had earlier @mathmath333
mathmath333
  • mathmath333
only one question was there like that
mathmath333
  • mathmath333
any way that is also interesting question

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