I. Functions of Several Variables: Find the Domain and Range of the following exercises. Al.x, y,=) =2tan~ ~ + In(x2 + =? ); find f(1, 1, 1) and f(1, -1, 1). X Qx, y, =) = ze* cosy; find f(In 2, 0, -1). fyr, v. =) = yzel(x*+y"); find f(1, -1, 2) and f(0, 1, 4). Ax, y) = sin -1 + tan-' find f( 1, 1). Box, y) = 4-2 - x y; find f(2, 3). f6: v) = 1 -y; find f(2, 0). Ax, y. =) = \\4-x2 - y2 - =2 ; find f(1, 1, 1/2). xty find f(3, 1). Vx-y