Please assist with the following:

(1 point) Consider the function f(x, y) = exp[9(x2 + '22)]. On a piece of paper, find and sketch the largest possible domain of the function. Then choose the shape of this domain. Largest possible domain is ? v If the domain of the function is as large as possible, find the range of the function. Range is (Enter your answer using interval notation). On a piece of paper, sketch a set of level curves f (x, y) = c with equidistant values of c, all on the same set of axes. Try to visualize the shape of the graph of the function. Then choose the shape of the level curves. Level curves are ? v When sketching level curves f(x, y) = c, what values of c are possible? Possible values of c are (Enter your answer using interval notation). i All of the xy-plane outside a circle, not including the circle All of the xy-plane outside a circle, including the circle The region inside a circle, not including the circle The region inside a circle, including the circle One quadrant, possibly including one or both axes Two quadrants, possibly including one or both axes A line h Two lines The entire xy-plane The entire xy-plane except for a line The entire xy-plane except for two lines None of the above V ? ues A collection of equally spaced parallel lines A collection of unequally spaced parallel lines A collection of intersecting lines A collection of equally spaced concentric circles A collection of unequally spaced concentric circles A collection of concentric ellipses Two straight lines and a collection of hyperbolas None of the above