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#1 2009-03-01 04:10:35

ganesh
Registered: 2005-06-28
Posts: 23,587

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

.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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#2 2009-04-15 18:34:38

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

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 (2009-04-15 18:35:32)

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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#3 2009-05-30 01:48:09

nurshodiq
Member
Registered: 2009-03-29
Posts: 12

Re: Logarithms

this is my answer for number
#3.

#4.

(i)+(ii)+(iii)

Last edited by nurshodiq (2009-05-30 02:23:15)

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#4 2009-05-31 21:02:23

Fruityloop
Member
Registered: 2009-05-18
Posts: 135

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 = 1:)

Last edited by Fruityloop (2009-05-31 21:11:06)

The eclipses from Algol 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.

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#5 2009-05-31 21:52:44

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,606

Re: Logarithms

#7

Take

and

Last edited by bobbym (2009-05-31 22:09:18)

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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