Sign Up FREE!  Sign In  Classroom Setup  Common Core Alignment  
05132010  #1 
Join Date: May 2010
Posts: 1

Inequality problem help!
can someone help me and explain how to solve this? i hope somene can solve this and help me XD
[ Uploaded with ImageShack.us 
05132010  #2  
Join Date: Dec 2008
Posts: 249

Quote:
x  0.73205 <= 0 x <= 0.73205 So for those values of x, is the right hand side (RHS) ever less than 0? 10(0.73205)^2 + 7 = 12.359 As x gets smaller than 0.73205, the RHS is never less than zero. So all values of x <= 0.73205 satisfy the inequality. Now we need to check values of x greater than 0.73205 The LHS is the graph of a line, while the RHS is a parabola opening upward with a vertex at (0,7). So for values of x >0.73205 the parabola will always be greater than the line since it increases at a faster rate than the line. Therefore, all real values of x will satisfy the inequality. If x can be a complex number, then the solution is more difficult. 

Thread Tools  
Display Modes  

