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Modulus inequality help

  • Thread starter truewt
  • Start date
  • #1
78
0

Homework Statement


Solve [tex] | \frac{x}{2} +3 | > 3-x^2 [/tex]
Hence, solve [tex] | \frac{e^x}{2} -3 | > 3-e^{2x}[/tex]


Homework Equations





The Attempt at a Solution



I've solved the first part. But I have no clue what is the link to the second part?! could there be just typo to the question?? I can't find any links...
 

Answers and Replies

  • #2
rock.freak667
Homework Helper
6,230
31
Let u=e^x

and it becomes

[tex]|\frac{u}{2} +3 | > 3-u^2 [/tex]
 
  • #3
78
0
Didn't help.

Anyway I figured the solution already.

should be let [tex]u= - e^x [/tex]
 

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