
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
March 2nd, 2014, 06:54 PM  #1 
Newbie Joined: Mar 2014 Posts: 5 Thanks: 0  solve the following equation  Hard problem
I need to show all the work for extra credit.

March 3rd, 2014, 05:31 AM  #2 
Math Team Joined: Sep 2007 Posts: 2,409 Thanks: 6  Re: solve the following equation  Hard problem
Your teacher said that if you showed someone else's work you would be given extra credit? That seems very strange.

March 3rd, 2014, 12:23 PM  #3 
Global Moderator Joined: May 2007 Posts: 6,821 Thanks: 723  Re: solve the following equation  Hard problem
It is extremely difficult to solve an equation which is blank.

March 4th, 2014, 11:35 AM  #4 
Newbie Joined: Mar 2014 Posts: 5 Thanks: 0  Re: solve the following equation  Hard problem
Here is the math problem

March 4th, 2014, 11:47 AM  #5 
Global Moderator Joined: Dec 2006 Posts: 20,966 Thanks: 2216 
That equation has no real solutions. Are you sure it is given correctly?

March 4th, 2014, 01:40 PM  #6 
Newbie Joined: Mar 2014 Posts: 5 Thanks: 0  Re: solve the following equation  Hard problem
I double check on the problem and Yes!

March 4th, 2014, 04:18 PM  #7 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,597 Thanks: 1038  Re: solve the following equation  Hard problem
Well, you must mean "to the power"; then you get solutions: http://www.wolframalpha.com/input/?i=so ... %3D0+for+x The way you present your stuff, looks like multiplications. 
March 5th, 2014, 03:50 AM  #8 
Global Moderator Joined: Dec 2006 Posts: 20,966 Thanks: 2216 
After "double checking", a different equation was posted, so the original equation was incorrect. It's easy to see that the second equation's real solutions correspond to sin²x = 1/4 and sin²x = 3/4, as the equation is effectively a quadratic equation in (16/81)^(sin²x), solving which gives (16/81)^(sin²x) = 2/3 or 8/27. Hence x = ±?/6 + k? or ±?/3 + k?, where k is an integer. 

Tags 
equation, hard, problem, solve 
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 
Nice hard equation to solve  can you do it?  victoriamath  Algebra  13  August 11th, 2014 08:48 AM 
solve the following equation  Hard problem  mjbecnel  Complex Analysis  4  March 4th, 2014 01:47 PM 
Please help me to solve this. It's really hard.  jiasyuen  Algebra  7  September 30th, 2013 06:38 PM 
Trigno problem. 'Solve equation for' type quests.  SolCon  Algebra  11  January 24th, 2011 06:57 AM 
Trigno problem. 'Solve equation for' type quests.  SolCon  Calculus  1  December 31st, 1969 04:00 PM 