October 1st, 2010, 10:24 AM  #1 
Newbie Joined: Sep 2010 Posts: 4 Thanks: 0  functions
Given f(x) = x  7, find all values of x such that f(x) > 6. Write your answer in interval notation. I have done this problem several times, and I keep getting it wrong! 
October 1st, 2010, 10:38 AM  #2 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,211 Thanks: 521 Math Focus: Calculus/ODEs  Re: functions
You need to find both: (1) (x  7) > 6 x > 13 (2) (x  7) <  6 x < 1 In interval notation: (?,1) U (13,?) 
October 1st, 2010, 01:20 PM  #3  
Global Moderator Joined: May 2007 Posts: 6,834 Thanks: 733  Re: functions Quote:
 

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