SOLUTION: Using interval notation, identify the domain for the function: f(x)=sqr(x^2 + 4)

SOLUTION: Using interval notation, identify the domain for the function: f(x)=sqr(x^2 + 4)

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Question 1132603: Using interval notation, identify the domain for the function: f(x)=sqr(x^2 + 4)

Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
x can be any real number, because its square is positive, so the function always exists.
(-oo, +oo)

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