How to solve a log problem??? - Math Help Forum

$Math Help Forum$

$Go Back$		Math Help Forum > Pre-University Math Help > Pre-Algebra and Algebra
$Reload this Page$ How to solve a log problem???

Download MHF Flyer

Mark Forums Read

$Reply$

#1

$Old$ November 11th, 2009, 03:26 PM

Kim Nu $Kim Nu is offline$

Junior Member

Join Date: May 2008

Posts: 50

Country:

United States

Thanks: 11

Thanked 0 Times in 0 Posts

$Kim Nu is on a distinguished road$

$Default$ How to solve a log problem???

If I have this:

log(x) = -3.87

and I want to find x, do I assume that this a natural logarithm, or a base 10?

In other words, does x = 10^-3.87 or x = e^(-3.87) ????

Thanks!

$Reply With Quote$

Advertisement

#2

$Old$ November 11th, 2009, 03:36 PM

$pickslides's Avatar$

pickslides $pickslides is offline$

MHF Contributor

Join Date: Sep 2008

Location: Melbourne

Posts: 2,018

Country:

Australia

Thanks: 100

Thanked 650 Times in 618 Posts

$pickslides is a splendid one to behold$ $pickslides is a splendid one to behold$ $pickslides is a splendid one to behold$ $pickslides is a splendid one to behold$ $pickslides is a splendid one to behold$ $pickslides is a splendid one to behold$

$Send a message via MSN to pickslides$

$Default$

I would assume base 10

$\ln(x)$ should be written for base e.

Although you can never be 100% sure, ask your teacher

__________________

Knowledge speaks, but wisdom listens.

$Reply With Quote$

$Reply$

« Parabolas | Top | Equations »

Thread Tools
$Show Printable Version$ Show Printable Version $Email this Page$ Email this Page
Display Modes
$Linear Mode$ Linear Mode $Hybrid Mode$ Switch to Hybrid Mode $Threaded Mode$ Switch to Threaded 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 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 08:56 PM.

your link here Sponsors

rv solar, e-learning,

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.