what is the domain and range of: square root of x^2-4?

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what is the domain and range of: square root of x^2-4?

2007-08-31 04:03:50 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

2 answers

domain = - ∞ to + ∞
&
range = -4 to + ∞

2007-08-31 04:10:00 · answer #1 · answered by harry m 6 · 0⤊ 0⤋

Domain is (-inf,-2] U [2,inf); range is [0,inf). Numbers x such that -2 < x < 2 will put a negative number under the radical, and I doubt that a student in complex analysis would be in doubt about range and domain.

2007-08-31 11:32:16 · answer #2 · answered by Tony 7 · 1⤊ 0⤋