Find the domain and range and describe the level curves for the function f(x,y).f(x, y) = ln (6x + 6y)
A. Domain: all points in the xy-plane satisfying 6x + 6y > 0; range: real numbers z ? 0; level curves: lines
B. Domain: all points in the xy-plane satisfying 6x + 6y > 0; range: all real numbers; level curves: lines
C. Domain: all points in the xy-plane; range: all real numbers; level curves: lines
D. Domain: all points in the xy-plane satisfying 6x + 6y ? 0; range: all real numbers; level curves: lines
Answer: B
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True or false?In Riemannian geometry, it is possible for a line to continue indefinitely although it has finite length.
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