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December 22, 2014

December 22, 2014

Posted by **Jessica** on Thursday, January 31, 2013 at 5:57pm.

3.4e^(2-2n)-9=-4 I don't know what is the step by step process. Help please!

- Logarithms (math) -
**Reiny**, Thursday, January 31, 2013 at 7:52pm3.4e^(2-2n)-9=-4

3.4e^(2-2n) = 5

e^(2-2n) = 5/3.4 = 50/34 = 25/17

e^(2-2n) = 25/17

ln both sides

ln( e^(2-2n) ) = ln (25/17)

(2-2n) lne = ln25 - ln17 , but lne = 1

2-2n = ln25-ln17

notice I have yet to touch a calculator ....

-2n = ln25 - ln17 - 2

n= (-1/2)ln25 + (1/2)ln17 + 1 , now to the calculator....

= appr .8072

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