Use a 3D grapher to generate the graph of the function.f(x, y) = -x2 - y2
A. 
B. 
C. 
D. 
Answer: C
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Find an antiderivative of the given function.4 cos 2x
A. - 8 sin 2x B. 2 sin 2x C. 4 sin 2x D. sin 2x
Graph the ellipse. Give the coordinates of the center, as well as the values of a and b.(x - 1)2 + 
= 1
A. center (1, 2), a = 1, b = 4
B. center (1, 2), a = 4, b = 1
C. center (2, 1), a = 4, b = 1
D. center (1, 2), a = 1, b = 4
Solve the problem.A 6-ft. board is cut into 2 pieces so that one piece is 2 feet longer than 3 times the shorter piece. If the shorter piece is x feet long, find the lengths of both pieces.
A. shorter piece: 6 ft; longer piece: 20 ft B. shorter piece: 1 ft; longer piece: 5 ft C. shorter piece: 3 ft; longer piece: 18 ft D. shorter piece: 16 ft; longer piece: 18 ft
Find the general solution of the differential equation, or the particular solution if initial conditions are given. y" - 15y' + 54y = 0
A. y = C1e15x + C2e54x B. y = C1e-6x + C2e-9x C. y = C1e6x + C2e9x D. y = C1e6x + C2xe9x