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How to calculate logs in a calculator such as -100+88 ln80

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Hi,
There is nothing special for the natural logarithm: you use the [LN] key.
You press [LN] , enter the number, then hit [=].

Here you have a negative 100, you must use the change sign (-)
[(-)] 100 [+] 88[*] [LN] 80 [=] The result is 285.6183439

Hope it helps.
Thank you for rating this solution

Posted on Dec 10, 2009

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