Rewriting an equation

caligirl350

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Feb 8, 2010
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Rewrite as an equivalent exponential equation. Do not solve.

log10 1 = 0

I don't get???
 
caligirl350 said:
Rewrite as an equivalent exponential equation. Do not solve.

log10 1 = 0

I don't get???

Hi caligirl350,

Recall: If logbx=y\displaystyle \log_{b}x=y, then by=x\displaystyle b^y=x

Does that help?
 
caligirl350 said:
No, I still do not get. sorry.

Hello again caligirl350,

Ok, let's review.

logbx=y\displaystyle \log_bx=y means x=by\displaystyle x=b^y

Therefore, a logarithm is an exponent.

Here are a few examples:

(1) log39=2\displaystyle \log_3 9=2 means 9=32\displaystyle 9=3^2. Saavy?

(2) log10100=2\displaystyle \log_{10}100=2 means 100=102\displaystyle 100=10^2

Your problem asked about log101=0\displaystyle \log_{10}1=0. This means 100=1\displaystyle 10^0=1.

Go http://www.purplemath.com/modules/logs.htm for more information.
 
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