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Math Help - Solving inequalities

  1. #1
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    Solving inequalities

    Hello! Here's my question:

    Find the solution set of the following inequality:
    -(e^x) < 7 - 3(x^2) < (e^x)

    Is it possible to add (e^x) to the entire inequality? Afte which, do I sketch the graph to find the solution set?

    Thank you for helping!
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  2. #2
    MHF Contributor Mathstud28's Avatar
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    Here is how you do it

    I'd say that the above is equal to e^{x}-3x^2+7\geq{0}\bigcap{e^{x}+3x^2-7\geq{0}} and solve
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  3. #3
    Moo
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    Hello,

    Well if you manage to solve this, congrats ^^

    Is it possible to add (e^x) to the entire inequality?
    Yes you can, i don't know if it'll help, but you can
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