1. e=?

2. log e=?

3. log (base 5) 1=?

4. log (base 7) 9=?

we went over this a few weeks ago, and i don't remember. thanks in advance.

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- Nov 12th 2007, 08:53 PMbeetzseveral questions-logs/natural logs
1. e=?

2. log e=?

3. log (base 5) 1=?

4. log (base 7) 9=?

we went over this a few weeks ago, and i don't remember. thanks in advance. - Nov 12th 2007, 08:58 PMJhevon
$\displaystyle e = \lim_{n \to \infty} \left( 1 + \frac 1n \right)^n \approx 2.71828183$

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2. log e=?

$\displaystyle \log_{10}e = \frac {\ln e}{\ln 10} = \frac 1{\ln 10}$

now punch that into your calculator.

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3. log (base 5) 1=?

the log of 1 is zero, no matter what the base is

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4. log (base 7) 9=?

$\displaystyle \log_79 = \frac {\log 9}{\log 7} = $ punch it into your calculator and see what you get