| 
April 29th, 2008, 12:48 PM
| | Newbie | | Join Date: Mar 2008
Posts: 13
Country: Thanks: 1
Thanked 3 Times in 3 Posts
| | Logarithms help If $2000 is invested at a rate of 12 percent per year, what is the principle after 5 years if the interest is compound quarterly? What is the principle afetr 5 years if the interest is compound quarterly?
Thanks to anyone who can solve. | 
April 29th, 2008, 12:57 PM
| | Senior Member | | Join Date: Nov 2007
Posts: 294
Country: Thanks: 108
Thanked 49 Times in 49 Posts
| | Is it  ? (There are  "compounds" with  .)
I'm not sure as there are no logarithms in it... | 
April 29th, 2008, 02:40 PM
| | Newbie | | Join Date: Mar 2008
Posts: 13
Country: Thanks: 1
Thanked 3 Times in 3 Posts
| | Doesnt the compund interest formula contain logarithms? | 
April 29th, 2008, 02:43 PM
| | Super Member | | Join Date: Apr 2008
Posts: 720
Country: Thanks: 6
Thanked 312 Times in 307 Posts
| | Quote:
Originally Posted by av8or91 Doesnt the compund interest formula contain logarithms? | The formula is  where r is the annual rate, t is the number of periods per year, n is the number of years, and P is the principal. So there are no logarithms in the formula.
__________________ To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. | 
April 30th, 2008, 01:27 PM
| | Newbie | | Join Date: Mar 2008
Posts: 13
Country: Thanks: 1
Thanked 3 Times in 3 Posts
| | Alright thanks for the reply.
I have one logarithm problem I cant figure out
Log2x^3= Log2(6-x) | 
April 30th, 2008, 02:01 PM
|  | Generous Contributor | | Join Date: Jan 2006 Location: Angelica, NY
Posts: 7,605
Country: Thanks: 643
Thanked 2,305 Times in 2,093 Posts
| | Quote:
Originally Posted by av8or91 Alright thanks for the reply.
I have one logarithm problem I cant figure out
Log2x^3= Log2(6-x) | New questions go in new threads.
There are no "nice" solutions to this equation, so it isn't surprising that you haven't been able to solve it. Numerically I get x = 1.634365293.
-Dan
__________________ Got a Physics question? Come on over to To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
"I must not fear. Fear is the mind killer. Fear is the little death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain." - The Litany Against Fear, "Dune" by Frank Herbert | | Thread Tools | | | | Display Modes | Linear Mode |
Posting Rules
| You may not post new threads You may not post replies You may not post attachments You may not edit your posts HTML code is Off | | | All times are GMT -7. The time now is 10:26 PM. | | |
 | |  |