I. Functions of Several Variables: Find the Domain and Range of the following exercises. , y.=) =2tan ~+ In(x2 + =? ) ; find f(1, 1, 1) and f(1, -1, 1). X ;, y, z) = ze* cosy; find f( In 2, 0, -1). BY, y, =) = yzel(x*+y"); find f(1, -1, 2) and f(0, 1, 4). x, v) = sin-|* + tan- X : find f(1, 1). , y) =4-2 Ex- 3 Jy; find f(2, 3). 16: v) = 1 -y; find f(2, 0). (x, y, z) = \\4-x2 - y2 - =2 ; find f(1, 1, 1/2). x. v) = xty find f( 3, 1). x-y