My Math Forum  

Go Back   My Math Forum > High School Math Forum > Algebra

Algebra Pre-Algebra and Basic Algebra Math Forum


Reply
 
LinkBack Thread Tools Display Modes
March 20th, 2017, 01:49 AM   #1
Member
 
Joined: Mar 2017
From: Tasmania

Posts: 36
Thanks: 2

Log graph

Just a little question

How would go about graphing 1/log2 to base e?
Posher is offline  
 
March 20th, 2017, 02:07 AM   #2
Global Moderator
 
Joined: Dec 2006

Posts: 18,142
Thanks: 1417

That's a constant, whose graph would be a "horizontal" line. Did you intend to ask about graphing a constant?
skipjack is offline  
March 20th, 2017, 04:12 AM   #3
Member
 
Joined: Mar 2017
From: Tasmania

Posts: 36
Thanks: 2

Far out I'm an idiot the function I'm supposed to to be graphing is 1/logx to base 2 :/
Posher is offline  
March 20th, 2017, 05:12 AM   #4
Senior Member
 
Joined: Apr 2014
From: Glasgow

Posts: 2,073
Thanks: 695

Math Focus: Physics, mathematical modelling, numerical and computational solutions
No worries.

First thing: check that you still remember what $\displaystyle \log_2 x$ means. It means "find the power that when applied to the number 2 gives x". So, if you wanted to calculate

$\displaystyle \log_2 8$

the answer to that would be 3 because $\displaystyle 2^3 = 8$.

Second thing: when you get a function and you're not sure what it looks like, try putting in some values and seeing what you get, so you get a general idea for how the curve varies. You can choose particular x-values to try and make your life easier. Because we have a log to base 2, throw in some powers of 2. For example, use x-values of 0, 1, 2, 4, 8, 16 and then work out the value of the function for each one. What you'll find is that you'll get values for all numbers apart from 0 and 1...

Hint: if your calculator gives an error or you get a divide by zero, that usually indicates an asymptote on the curve.
Benit13 is offline  
March 20th, 2017, 09:00 PM   #5
Member
 
Joined: Mar 2017
From: Tasmania

Posts: 36
Thanks: 2

This is a different graph though ben due to it being 1 OVER logx to base 2
Posher is offline  
Reply

  My Math Forum > High School Math Forum > Algebra

Tags
graph, log



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Graph theory - diameter of biconnected graph Estevan Number Theory 2 November 4th, 2016 02:05 PM
Graph theory: Linking graph characteristics and minimal cut avnerg Applied Math 0 September 18th, 2013 07:03 AM
Cosine graph, sine graph basics confusion taylor_1989_2012 Trigonometry 1 February 7th, 2013 10:07 AM
Graph question: model system of inequalities as graph moonlander Applied Math 1 November 16th, 2011 06:44 AM
graph theory - social networks and reverting the graph johnyjj2 Applied Math 0 December 28th, 2010 03:49 PM





Copyright © 2017 My Math Forum. All rights reserved.