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
April 12th, 2012, 02:17 AM   #1
Newbie
 
Joined: Apr 2012

Posts: 2
Thanks: 0

How many solutions to an equation

Hi folks, I am trying to help my son with his Maths revision but too many years and brain cells have been and gone.

Can someone help to explain how we should approach this problem?

How many solutions does the equation (4sinx - 5root5)(sin x+1)=0 have in the interval 0?x<2?

Thanks
raycol1970 is offline  
 
April 12th, 2012, 04:19 AM   #2
Math Team
 
Joined: Dec 2006
From: Lexington, MA

Posts: 3,267
Thanks: 407

Re: How many solutions to an equation

Hello, raycol1970!

Quote:






soroban is offline  
April 13th, 2012, 04:19 AM   #3
Newbie
 
Joined: Apr 2012

Posts: 2
Thanks: 0

Re: How many solutions to an equation

Soraban - thank you ever so much! - listen really sorry I made a mistake in the question it should be just root5 and not 5root5 - really sorry for this...
raycol1970 is offline  
April 14th, 2012, 02:03 PM   #4
Newbie
 
Joined: Apr 2012
From: Padua, Italy

Posts: 15
Thanks: 0

Re: How many solutions to an equation

Quote:
Originally Posted by raycol1970
Soraban - thank you ever so much! - listen really sorry I made a mistake in the question it should be just root5 and not 5root5 - really sorry for this...
You have only to replace with in soroban's solution. But so has a real solution.
Delirium is offline  
Reply

  My Math Forum > High School Math Forum > Algebra

Tags
equation, solutions



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
How many solutions are there to the equation? Solarmew Applied Math 12 November 21st, 2011 05:01 PM
solutions of an equation daivinhtran Algebra 10 September 8th, 2011 02:20 PM
Solutions to the equation jakeward123 Calculus 5 June 3rd, 2011 12:17 AM
Solutions to an equation rebecca Calculus 3 July 31st, 2010 05:35 AM
How many solutions to an equation raycol1970 Applied Math 1 December 31st, 1969 04:00 PM





Copyright © 2018 My Math Forum. All rights reserved.