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Logarithmic Help!
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Todd19
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PostPosted: Sun Mar 04, 2012 6:35 pm    Post subject: Logarithmic Help! Reply with quote

alright I know how to solve an equation with an exponent on one side but what about a function like this?

5^x=4^(x+1)

I know you need to do this.

log5^x=log^(x+1)

Then

xLog5=(x+1)Log4

But then what?
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zozo
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PostPosted: Sun Mar 04, 2012 7:00 pm    Post subject: Reply with quote

log 5^x = log 4^(x + 1) xlog5 = (x + 1)log4 x log5/log4 = x + 1 x(log5/log4 - 1) = 1 x = 1/(log5/log4 - 1)


So says google.

Just an FYI, you can enter any equation into the google search window and it'll spit out answers.
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Todd19
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PostPosted: Sun Mar 04, 2012 7:05 pm    Post subject: Reply with quote

Thank you that was what I was looking for
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gostros
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PostPosted: Sun Mar 04, 2012 7:12 pm    Post subject: Reply with quote

wolframalpha.com is better IMO.

x=-(2 log(2))/(2 log(2)-log(5))
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