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college algebra

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Finding domain

f(x)=1/x^2-5

Can't remember how to solve, your help is appreciated:-)

  • college algebra -

    If X^2-5 is the denom, then the domain would be all X such that the denom does not equal 0.

    So find when x^2-5=0
    x=sqrt(5) (Both positive and negative)

    So the domain is all real numbers, such that X does not equal +- sqrt (5)

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