math
posted by alk .
questions involving domain and range...
1. Find the domain of the function
f(x)=(3x+1)/(sqrt of (x^2+x2))
andd.
2. Let f(x)= (absvalue(x))/x.
Show that f(x)={ 1, x > 0
{1, x < 0
Find the domain and range of f(x).
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