Math Help Forum

Math Help Forum Feed Site Feed

Go Back   Math Help Forum > High School Math Help > Pre-Calculus
Reply
 
Thread Tools Display Modes
  #1  
Old 11-19-2008, 08:05 PM
MHF Contributor
 
Join Date: Jul 2008
Location: Manhattan
Posts: 1,242
Country:
Thanks: 882
Thanked 16 Times in 12 Posts
magentarita is on a distinguished road
Default Solve for x

e^(x) + e^(-x) = 5...solve for x.
Reply With Quote
Advertisement
 
  #2  
Old 11-19-2008, 08:18 PM
Krizalid's Avatar
From a unit cube


 
Join Date: Mar 2007
Location: Santiago
Posts: 2,305
Country:
Thanks: 53
Thanked 988 Times in 798 Posts
Krizalid has much to be proud ofKrizalid has much to be proud ofKrizalid has much to be proud ofKrizalid has much to be proud ofKrizalid has much to be proud ofKrizalid has much to be proud ofKrizalid has much to be proud ofKrizalid has much to be proud ofKrizalid has much to be proud of
Send a message via MSN to Krizalid
Default

Multiply your equation by e^x, and then put z=e^x, you're gonna have to deal with a quadratic equation.
__________________
\phantom+
  • Got trouble with LaTeX? Take a look.
  • Make your partial integration (aka integration by parts) faster. Click here.
  • How to prove limits by the \epsilon-\delta definition.
Reply With Quote
The following users thank Krizalid for this useful post:
Donate to MHF
  #3  
Old 11-20-2008, 07:09 AM
MHF Contributor
 
Join Date: Jul 2008
Location: Manhattan
Posts: 1,242
Country:
Thanks: 882
Thanked 16 Times in 12 Posts
magentarita is on a distinguished road
Default can you.............

Quote:
Originally Posted by Krizalid View Post
Multiply your equation by e^x, and then put z=e^x, you're gonna have to deal with a quadratic equation.
Can you be more specific?
Reply With Quote
  #4  
Old 11-20-2008, 10:45 AM
Krizalid's Avatar
From a unit cube


 
Join Date: Mar 2007
Location: Santiago
Posts: 2,305
Country:
Thanks: 53
Thanked 988 Times in 798 Posts
Krizalid has much to be proud ofKrizalid has much to be proud ofKrizalid has much to be proud ofKrizalid has much to be proud ofKrizalid has much to be proud ofKrizalid has much to be proud ofKrizalid has much to be proud ofKrizalid has much to be proud ofKrizalid has much to be proud of
Send a message via MSN to Krizalid
Default

Quote:
Originally Posted by magentarita View Post

Can you be more specific?
No.

I want you to try to do what I said.
__________________
\phantom+
  • Got trouble with LaTeX? Take a look.
  • Make your partial integration (aka integration by parts) faster. Click here.
  • How to prove limits by the \epsilon-\delta definition.
Reply With Quote
The following users thank Krizalid for this useful post:
Donate to MHF
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off
Forum Jump


All times are GMT -7. The time now is 04:29 PM.


Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2009, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.2.0 ©2008, Crawlability, Inc.
©2005 - 2008 Math Help Forum


Math Help Forum is a community of maths forums with an emphasis on maths help in all levels of mathematics.
Register to post your math questions or just hang out and try some of our math games or visit the arcade.