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FreeTrader
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Can you please help guide me through the last steps in this equation involving logarithms?
 2 years ago
 2 years ago
FreeTrader Group Title
Can you please help guide me through the last steps in this equation involving logarithms?
 2 years ago
 2 years ago

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FreeTrader Group TitleBest ResponseYou've already chosen the best response.0
\[1+\ln x = \ln4\]
 2 years ago

FreeTrader Group TitleBest ResponseYou've already chosen the best response.0
I am solving for x. Can you nudge me about the ln properties?
 2 years ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.2
1+ln(x) = ln(4) 1 = ln(4)ln(x) 1 = ln(4/x) 4/x = e^1 4/x = e 4 = ex 4/e = x x = 4/e
 2 years ago

FreeTrader Group TitleBest ResponseYou've already chosen the best response.0
Thanks, I'll see if I can follow this on paper here... Just a sec...
 2 years ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.2
The properties I used were ln(x)  ln(y) = ln(x/y) and ln(x) = y converts to e^y = x
 2 years ago

FreeTrader Group TitleBest ResponseYou've already chosen the best response.0
I see the division coming into play with the subtraction.
 2 years ago

FreeTrader Group TitleBest ResponseYou've already chosen the best response.0
The last one is the key I was missing.
 2 years ago

satellite73 Group TitleBest ResponseYou've already chosen the best response.1
you can also try \[\ln(x)=\ln(4)1\] \[x=e^{\ln(4)1}=e^{\ln(4)}\times e^{1}=\frac{4}{e}\]
 2 years ago

FreeTrader Group TitleBest ResponseYou've already chosen the best response.0
ln x = e to what power gives us x Logarithms confuse me to no end, despite how "simple" they are supposed to be.
 2 years ago

FreeTrader Group TitleBest ResponseYou've already chosen the best response.0
I have duplicated the algebra, and it makes sense. Are you aware of a really good ln tutorial with exercises?
 2 years ago

jim_thompson5910 Group TitleBest ResponseYou've already chosen the best response.2
try this page: http://www.purplemath.com/modules/solvelog.htm
 2 years ago

FreeTrader Group TitleBest ResponseYou've already chosen the best response.0
Thank you. If you answer that tutorial question in the new Q I posted, I'd be pleased to pin a medal upon you.
 2 years ago
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