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  •  » Apply logarithms to both sides of an equation

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Topic review (newest first)

bobbym
2013-07-09 01:48:15



EbenezerSon
2013-07-09 01:30:07

Yes I did it as an example, It not the real values.

Thanks.

anonimnystefy
2013-07-09 01:28:25

EbenezerSon wrote:

Given that, Log2=3.14 Log3=616

These values are not correct.

EbenezerSon
2013-07-09 01:18:25

See the following:
Solve the following logarithm:

Log6 + Log10.  Given that, Log2=3.14 Log3=616

= Log(2*3)+Log10 = Log2+log3 +log10= (3.14+616+1) = 620.14.

Note that, Log10=1

This is what I mean.

I hope you cotton.

anonimnystefy
2013-07-09 01:07:55

nando88 wrote:

whe will a log of a number return a whole number?

Hi nando

Welcome to the forum! smile

Well, it depends on the base of the logarithm. If you have the logarithm base 10, then the logarithm of the integer powers of ten will be integers.

EbenezerSon
2013-07-09 01:05:03

nando88 wrote:

whe will a log of a number return a whole number?

Sometimes the when a log question is given, one could arrive on  figures which you must substitute them into it.  Actually the question setter,  will set it in such way that you will arrive on those whole numbers.  An finally you will substitute.

nando88
2013-07-09 00:58:57

whe will a log of a number return a whole number?

EbenezerSon
2013-07-09 00:54:05

nando88 wrote:

and if I had something like log(3^3+3^4)=log(3^7), how could I simplify log(3^3+3^4). How could you solve this, because I tried adding what's inside the parenthesis and then applying logarithm and it didn't work. How can I solve this equation?

Check very well from the source I suppose there should be some kind of: log2=3.142 or Log3=616 or something,  so that you can substitute into the equation, because to me this log could be solved to some extent but good final solution is not possible. If something of that kind is not provided.

bobbym
2013-07-09 00:27:30

You could apply it to

nando88
2013-07-08 23:44:53

How could I apply a logarithm to 3^3+3^4?

bobbym
2013-07-08 22:18:53

3^3 + 3^4 does not equal 3^7

nando88
2013-07-08 22:11:07

and if I had something like log(3^3+3^4)=log(3^7), how could I simplify log(3^3+3^4). How could you solve this, because I tried adding what's inside the parenthesis and then applying logarithm and it didn't work. How can I solve this equation?

bob bundy
2013-07-08 16:51:25

hi

I'm trying to anticipate your next step; maybe like this would be useful:



Bob

bobbym
2013-07-08 16:21:33

When you take the log of both sides you get:

nando88
2013-07-08 16:06:54

yes

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