Pagina Procesada y Actualizada en: 0.042 Segs
Give the domain of the function.
square root of x+3 over (x+9)(x+3)
Ask by - en mathematics |
The domain is all possible values of x.
Numbers that are immediately excluded:
x = -9
x = -3
As either one would make the denominator 0, and division by 0 is not defined.
However, if you look at the numerator, you see that any x<-3 is also excluded, since that would mean x + 3 <0, which means its square root is imaginary.
So the domain is x<= - 3, which includes the numbers excluded by the denominator.
Answer by -