Find the domain and range and describe the level curves for the function f(x,y).
-f(x, y) = ( + )

A) Domain: all points in the xy-plane; range: all real numbers; level curves: circles with centers at (0, 0)
B) Domain: all points in the xy-plane satisfying x 2 + y 2 ≤ 1; range: real numbers ≤ z ≤ ; level curves: circles with centers at (0, 0)
C) Domain: all points in the xy-plane satisfying x 2 + y 2 ≤ 1; range: real numbers - ≤ z ≤ ; level curves: circles with centers at (0,0) and radii r, 0

Question

Find the domain and range and describe the level curves for the function f(x,y).
-f(x, y) =  (  +  )

A) Domain: all points in the xy-plane; range: all real numbers; level curves: circles with centers at (0, 0) 
B) Domain: all points in the xy-plane satisfying x 2 + y 2 ≤ 1; range: real numbers ≤ z ≤ ; level curves: circles with centers at (0, 0) 
C) Domain: all points in the xy-plane satisfying x 2 + y 2 ≤ 1; range: real numbers - ≤ z ≤ ; level curves: circles with centers at (0,0) and radii r, 0 < r ≤ 1 
D) Domain: all points in the xy-plane; range: real numbers - ≤ z ≤ ; level curves: circles with centers at (0, 0)

Quizplus · Accepted Answer

The Answer of Find the domain and range and describe the level curves for the function f(x,y).
-f(x, y) =  (  +  )

A) Domain: all points in the xy-plane; range: all real numbers; level curves: circles with centers at (0, 0) 
B) Domain: all points in the xy-plane satisfying x 2 + y 2 ≤ 1; range: real numbers ≤ z ≤ ; level curves: circles with centers at (0, 0) 
C) Domain: all points in the xy-plane satisfying x 2 + y 2 ≤ 1; range: real numbers - ≤ z ≤ ; level curves: circles with centers at (0,0) and radii r, 0 < r ≤ 1 
D) Domain: all points in the xy-plane; range: real numbers - ≤ z ≤ ; level curves: circles with centers at (0, 0)

Find the Domain and Range and Describe the Level Curves