
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
April 5th, 2018, 12:06 PM  #1 
Newbie Joined: Apr 2018 From: Israel Posts: 5 Thanks: 0  Logarithms with e
I'm learning logarithms and i have a problem with this: 500 X e 2.5 I know that the solution is 41.04 But how to do that? 
April 5th, 2018, 12:19 PM  #2 
Senior Member Joined: Aug 2012 Posts: 1,847 Thanks: 507  
April 5th, 2018, 01:51 PM  #3 
Math Team Joined: May 2013 From: The Astral plane Posts: 1,754 Thanks: 701 Math Focus: Wibbly wobbly timeywimey stuff. 
You have to know that $\displaystyle e \approx 2.71828$. Then plug $\displaystyle 500 ~ e^{2.5}$ into the calculator. If you are using a scientific calculator you can plug in 500 (times) exp (2.5) Dan Addendum: Maschke for psychic of the year for figuring out the formula the OP meant by that. 
April 5th, 2018, 08:39 PM  #4 
Newbie Joined: Apr 2018 From: Israel Posts: 5 Thanks: 0 
Many thanks! I got it. And I know now another useful site. 
April 6th, 2018, 12:09 PM  #5 
Math Team Joined: May 2013 From: The Astral plane Posts: 1,754 Thanks: 701 Math Focus: Wibbly wobbly timeywimey stuff.  
April 6th, 2018, 12:49 PM  #6 
Senior Member Joined: May 2016 From: USA Posts: 989 Thanks: 406 
More insane


Tags 
logarithms 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
logarithms please help !  hi2you  Math  6  January 31st, 2015 06:21 PM 
Logarithms  a2910  Algebra  3  October 27th, 2014 03:14 PM 
logarithms  ron246  Algebra  5  May 22nd, 2014 06:59 AM 
Logarithms  Mr Davis 97  Algebra  1  May 3rd, 2014 06:34 PM 
Logarithms  hahachow  Algebra  1  October 3rd, 2012 09:04 AM 