anonymous
  • anonymous
What is the domain of the function shown below? f(x)=-24/(x^2+8) help please
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
@Mertsj or @phi can you guys help?
anonymous
  • anonymous
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
Mertsj
  • Mertsj
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.

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anonymous
  • anonymous
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)
anonymous
  • anonymous
so then the domain would be all real numbers greater than 0?
anonymous
  • anonymous
yes
anonymous
  • anonymous
dag nabit it was just all real numbers :/ thanks anyways
Mertsj
  • Mertsj
Didn't I post that the domain is all real numbers?

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