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Activity 11.1.2.
Identify the domain and range of each of the following functions. Draw a picture of each domain in the
\(xy\)-plane.
(a)
(b)
\(f(x,y) = \sqrt{x^2+y^2}\)
(c)
\(Q(x,y) = \frac{x+y}{x^2-y^2}\)
(d)
\(s(x,y) = \frac{1}{\sqrt{1-xy^2}}\)
