SOLUTION: find domain and range of function. f(x)=√x^2-4

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Question 1011565: find domain and range of function. f(x)=√x^2-4
Found 2 solutions by It is costly, iran math:
Answer by It is costly(175) About Me  (Show Source):
Answer by iran math(2) About Me  (Show Source):
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domain is from (-¤,-2]and[2,-¤)
range is f(x)=y , y >-4 , y=-4