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 except (0, 0); range: real numbers > 0; level curves: ellipses 
B. Domain: all points in the xy-plane except (0, 0); range: all real numbers; level curves: ellipses 
C. Domain: all points in the xy-plane; range: all real numbers; level curves: ellipses 
D. Domain: all points in the xy-plane; range: real numbers > 0; level curves: ellipses 
Answer: A
You might also like to view...
The magnitude of earthquake 1 is 4.5, and the magnitude of earthquake 2 is 6.5. How do their intensities compare? ?
A. Earthquake 1 is 100 times as intense as earthquake 2. B. Earthquake 1 is 2 times as intense as earthquake 2. C. Earthquake 2 is 2 times as intense as earthquake 1. D. Earthquake 2 is 100 times as intense as earthquake 1.
Provide an appropriate response.The data below represent the number of tornadoes that occurred each year in a certain county during the years 1948 to 2004. Make a dot plot to organize these data.262451456435664554045665755372325666664545456654565454331 
A. 
B. 
C. 
D. 
Subtract.915
A. 332 B. 1398 C. 426 D. 432
Solve the equation.26 = 6x + 2
A. {18} B. {22} C. {4} D. {2}