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math/algebra

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find the domain of the function

1) f(x)= log2( 49-x^2)

2) f(x)=In [1/x+5]

  • math/algebra -

    the domai of log(x) is x>0

    So, we need

    1) 49-x^2 > 0
    2) 1/x+5 > 0

    Just solve those inequalities.

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