Math Is Fun Forum

Jai Ganesh

Administrator

Registered: 2005-06-28

Posts: 48,385

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 appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.

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

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.

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)

Fruityloop

Member

Registered: 2009-05-18

Posts: 143

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)

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.