i was wondering, it says use interval notation to describe the domain of the real function, but a real function means the domain is a set of real numbers. does it mean all real numbers? i graphed it on my calculator and got [-9,10] but i have no idea if i should have negative infinity to positive infinity for all real numbers??(adsbygoogle = window.adsbygoogle || []).push({});

f(x)=square root of (x squared -3x+2). whats the domain!?

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# Homework Help: Pre-calc function

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