Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

- Index
- » Exercises
- »
**Logarithms**

Pages: **1**

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

1. Find the value of

2. Find the value of x if

3. What is the value of

4. Show that

.

5. Show that xyz = 1 if

6. Show that

.

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.

Offline

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

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.**

Offline

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

this is my answer for number

#3.

#4.

(i)+(ii)+(iii)

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

Offline

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

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.**

Offline

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

#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.**

Offline

Pages: **1**

- Index
- » Exercises
- »
**Logarithms**