E7 Question 6 1 pts Find the domain and range and describe the level curves for the function f(x,y). v+1 x, y) = 0 Domain: all points in the xy-plane excluding x = 0; range: all real numbers; level curves: parabolas -1 1 "= Cl 0 Domain: all points in the xy-plane excluding x 2 0; range: real numbers 2 2 0; level curves: parabolas 3 v = (X'- -1 0 Domain: all points in the xy-plane; range: real numbers 2 2 0; level curves: parabolas v = 5x3 _ 1 0 Domain: all points in the xy-plane; range: all real numbers; level curves: parabolas V = 0:3 _ 1 E Question 7 1 pts Find the domain and range and describe the level curves for the function f(x,y). 1 f(x, y) = - 3 sin'1(x2 + yz) 0 Domain: all points in the xy-plane satisfying x2 + y2 'I s 1; range: real numbers 3' ; s z s it; level curves: circles With centers at (0,0) and radii r, 0