Find the critical point(s) of the function. Then use the second derivative test to classify the nature of each point, if possible. Finally, determine the relative extrema of the function.
?
?
A. 
; saddle point: 
B. 
; relative maximum value: 
C. 
; relative minimum value: 
Answer: C
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Evaluate the determinant by expansion by minors.
A. -75 B. -12 C. -66 D. 540
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: real numbers > 0; level curves: ellipses 
B. Domain: all points in the xy-plane; range: all real numbers; level curves: ellipses 
C. Domain: all points in the xy-plane except (0, 0); range: all real numbers; level curves: ellipses 
D. Domain: all points in the xy-plane except (0, 0); range: real numbers > 0; level curves: ellipses 
Use the order of operations to evaluate each problem.
A. 60 B. 24 C. 22 D. 36
Provide an appropriate response.A businessman is charged a $9.92 monthly finance charge on a bill of $566.30. What is the monthly interest rate on the account? (Round to the nearest hundredth of a percent.)
Fill in the blank(s) with the appropriate word(s).