Question: The unit circle x 2 + y 2 = 1 consists of four one-to-one functions, f 1 (x), f 2 (x), f 3 (x), and

The unit circle x2 + y2 = 1 consists of four one-to-one functions, f1(x), f2(x), f3(x), and f4(x) (see figure).

a. Find the domain and a formula for each function.

b. Find the inverse of each function and write it as y = f-1(x).

y y = f,(x) y = f,(x) х У 35f) y = f,x) -1

y y = f,(x) y = f,(x) 35f) y = f,x) -1

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