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#1 2009-03-02 03:10:35

ganesh
Moderator

Online

Logarithms

1. Find the value of

.

2. Find the value of x if
.

3. What is the value of
?

4. Show that
if
.

5. Show that xyz = 1 if
.

6. Show that
if
.

7. Show that
.

8. Show that xyz+1 = 2yz if
.


Character is who you are when no one is looking.
 

#2 2009-04-16 16:34:38

bobbym
Administrator

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Re: Logarithms

Hi ganesh;

This is my answer to for problem 2

We can change the original problem to read:











So x = 8

Is this OK?

bobbym

Last edited by bobbym (2009-04-16 16:35:32)


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.
 

#3 2009-05-30 23:48:09

nurshodiq
Member

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Re: Logarithms

this is my answer for number
#3.






#4.










(i)+(ii)+(iii)

Last edited by nurshodiq (2009-05-31 00:23:15)

 

#4 2009-06-01 19:02:23

Fruityloop
Full Member

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Re: Logarithms

The answer to #1.



We have


We set p equal to it and take the log of both sides

log p = log (
)

log p =


log p =


log p = 0
p = 1smile

Last edited by Fruityloop (2009-06-01 19:11:06)


The eclipses from Algol (an eclipsing binary star) come further apart in time when the Earth is moving away from Algol and closer together in time when the Earth is moving towards Algol, thereby proving that the speed of light is variable and that Einstein's Special Theory of Relativity is wrong.
 

#5 2009-06-01 19:52:44

bobbym
Administrator

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Re: Logarithms

#7



Take
and






Last edited by bobbym (2009-06-01 20:09:18)


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.
 

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