Find the area enclosed by the given curves.y = - 4sin x, y = sin 2x, 0 ? x ? ?
A. 8
B. 4
C. 16
D. 
Answer: A
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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 
Solve the quadratic inequality symbolically. Write your answer in interval notation.5x2 + 5x + 3 ? 0
A. No real solutions
B. 
C. All real numbers
D. 
Find the mean for the group of data items. If necessary, round the answer to nearest tenth.17, 9, 1, 8, 9, 10, 16, 2
A. 19 B. 9 C. 10.3 D. 8
Use the total differential to approximate the quantity. Then use a calculator to approximate the quantity, and give the absolute value of the difference of the two results to four decimal places.0.97e0.02
A. 1.01; 0.9896; 0.0204 B. 1; 0.9896; 0.0104 C. 0.99; 1; 0.0100 D. 0.99; 0.9896; 0.0004