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February 11, 2016
Posted by **Stephanie** on Tuesday, November 1, 2011 at 12:10am.

ln e^x = x.

I think that is true.

2)true/false:

(2 ln x)/ ln 10 = ln x^2 - ln 10 for all positive x.

I think this is true too.

- math- check please -
**Steve**, Tuesday, November 1, 2011 at 11:05am1) True. That's the definition of the natural log.

2) No.

ln(x^2/10) = 2lnx - ln 10

That's not the same as 2lnx/ln10

ln x^{2}/ln 10 = log_{10}x^2