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laughs

Member

Registered: 2006-11-28

Posts: 3

Exponential and Logarithmic Functions

Hi everyone, just wanted to know if you could help me out with these two problems I have. The first question is... 3 ln y = 2 + 3 ln x

The second is... 3 ln 2 + 0.5 ln 64 = 3 ln 4

Any help would be greatly appreciated.....

luca-deltodesco

Member

Registered: 2006-05-05

Posts: 1,470

Re: Exponential and Logarithmic Functions

what exactly do you need to do with them?

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laughs

Member

Registered: 2006-11-28

Posts: 3

Re: Exponential and Logarithmic Functions

Hi, thanks for the response.... In the first one, I am supposed to express as a sum, difference, or multiple of logarithms. If possible, evaluate logarithms of the result.

The second one, I am supposed to use a calculator to verify that 3 ln 2 + 0.5 ln 64 = 3 ln 4

luca-deltodesco

Member

Registered: 2006-05-05

Posts: 1,470

Re: Exponential and Logarithmic Functions

well not sure why you need help with second one, you're calculator should have a ln button?

for first one

maybe like that?

there are key concepts to know when working with logarithms

Last edited by luca-deltodesco (2006-11-28 09:10:21)

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The Beginning Of All Things To End.
The End Of All Things To Come.

laughs

Member

Registered: 2006-11-28

Posts: 3

Re: Exponential and Logarithmic Functions

Thanks a lot, I appreciate that

luca-deltodesco

Member

Registered: 2006-05-05

Posts: 1,470

Re: Exponential and Logarithmic Functions

i guess for the first one you might rearrange for a formula in x or y.

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The Beginning Of All Things To End.
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Patrick

Real Member

Registered: 2006-02-24

Posts: 1,005

Re: Exponential and Logarithmic Functions

why is the minus added at the last line?

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Ricky

Moderator

Registered: 2005-12-04

Posts: 3,791

Re: Exponential and Logarithmic Functions

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"In the real world, this would be a problem.  But in mathematics, we can just define a place where this problem doesn't exist.  So we'll go ahead and do that now..."