My Math Forum  

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

Algebra Pre-Algebra and Basic Algebra Math Forum

LinkBack Thread Tools Display Modes
October 7th, 2009, 05:58 PM   #1
Senior Member
Joined: Feb 2008

Posts: 100
Thanks: 0

Graphing Trig Equations

I'm having a really hard time graphing a trig equation. I want to check my solutions for variable x, but since the equation is missing y I don't know how to set it up on my graphing calculator. If someone could help me on this, it will be of tremendous help.

David_Lete is offline  
October 7th, 2009, 06:25 PM   #2
Global Moderator
greg1313's Avatar
Joined: Oct 2008
From: London, Ontario, Canada - The Forest City

Posts: 7,968
Thanks: 1152

Math Focus: Elementary mathematics and beyond
Re: Graphing Trig Equations

Assuming you want the values of x where sin(3x) = -1, use y = sin(3x) + 1 and then find the zeroes.
greg1313 is offline  
October 7th, 2009, 06:29 PM   #3
Senior Member
Joined: Aug 2008
From: Blacksburg VA USA

Posts: 354
Thanks: 7

Math Focus: primes of course
Re: Graphing Trig Equations

ok, just set y=sin(3x)+1 and plot it over say y and x each over -4 to +4. You'll see the plot, but for your problem, y=0, so then you will be able to see the solutions where this is the case ...
billymac00 is offline  
October 7th, 2009, 06:59 PM   #4
Senior Member
Joined: Feb 2008

Posts: 100
Thanks: 0

Re: Graphing Trig Equations

Thank you guys! I really appreciate it.
David_Lete is offline  

  My Math Forum > High School Math Forum > Algebra

equations, graphing, trig

Search tags for this page
Click on a term to search for related topics.
Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Graphing trig functions Lucida Trigonometry 7 May 20th, 2012 05:07 PM
Graphing trig functions nicolodn Algebra 10 October 21st, 2010 05:16 AM
trig graphing of a function stef975_2009 Algebra 2 September 14th, 2009 08:40 PM
graphing a trig. equation, help?! stef975_2009 Algebra 2 September 12th, 2009 02:23 AM
Graphing Trig Functions David_Lete Algebra 3 May 13th, 2009 05:46 AM

Copyright © 2019 My Math Forum. All rights reserved.