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Rugtugba

  • one year ago

What is the domain of the function shown below? f(x)=-24/(x^2+8) help please

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  1. Rugtugba
    • one year ago
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    @Mertsj or @phi can you guys help?

  2. mivanov
    • one year ago
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    well the domain are the x values for which the function is defined. for a fraction such as yours to be undefined the divisor must be 0 but x^2+8 > 0 for every x so the domain is R, every real number

  3. Mertsj
    • one year ago
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    Remember, the denominator cannot be 0. Since the denominator is x^2+8, and x^2 has a smallest value of 0, and 0+8 will always be positive, there are no restrictions on x and the domain is all real numbers.

  4. mivanov
    • one year ago
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    hey Mertsj, can you help me with some advanced number theory? i am trying to do something with the sigma function(sum of divisors of number)

  5. Rugtugba
    • one year ago
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    so then the domain would be all real numbers greater than 0?

  6. mivanov
    • one year ago
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    yes

  7. Rugtugba
    • one year ago
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    dag nabit it was just all real numbers :/ thanks anyways

  8. Mertsj
    • one year ago
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    Didn't I post that the domain is all real numbers?

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