Graphing inequality with mod function

Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
2 replies · 2K views
aim1732
Messages
428
Reaction score
2
How can we graph this inequality - |y|+1/2>=e-|x| ?
I drew the function(actually a combination of functions) for equality. It would be symmetric in all quadrants and intersect the axes at +ln2 and -ln2(x-axis) and 1/2 and -1/2(y-axis).However since the various graphs are mixed up it is hard pinpoint what region to take.

I have attached one half of the actual graph.
The other half is it's reflection on the x-axis.
 

Attachments

  • graph.php.png
    graph.php.png
    1.8 KB · Views: 499
Last edited:
Physics news on Phys.org
aim1732 said:
How can we graph this inequality - |y|+1/2>=e-|x| ?
I drew the function(actually a combination of functions) for equality. It would be symmetric in all quadrants and intersect the axes at +ln2 and -ln2(x-axis) and 1/2 and -1/2(y-axis).However since the various graphs are mixed up it is hard pinpoint what region to take.

I have attached one half of the actual graph.
The other half is it's reflection on the x-axis.
Your inequality is equivalent to |y| >= e-|x| - 1/2. This can be rewritten as
y >= e-|x| - 1/2 or -y >= e-|x| - 1/2

So y >= e-|x| - 1/2 or y <= -e-|x| + 1/2

Does that help?
 
Yes I should have considered the intervals for the different inequalities.Thanks a lot.