## University Calculus: Early Transcendentals (3rd Edition)

a. Domain: The domain is the set of all points $(x,y)$ outside satisfying $x^2+y^2 =1$ . b. Range: The set of all real numbers c. Level Curves: These are the circles with center at (0,0) having radii $r \gt 1$ d. Boundary is the circle $x^2+y^2=1$ e. Open f. Unbounded