Posted by Jessica on Thursday, January 31, 2013 at 5:57pm.
3.4e^(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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