Find the indicated roots.Tenth roots of -4; trigonometric form
A. 
(cos 18° + i sin 18°), 
(cos 54° + i sin 54°), 
i, 
-
i, 
B. 
, 
(cos 36° + i sin 36°), 
(cos 72° + i sin 72°), 
-
, 
C. 
(cos 18° + i sin 18°), 
(cos 54° + i sin 54°), 
i, 
(cos 126° + i sin 126°), 
D. 
, 
, -
, 
Answer: C
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Solve the problem.Hooke's law is applicable to idealized (linear) springs that are not stretched or compressed too far. Consider a nonlinear spring whose restoring force is given by F(x) = 17x - 0.2x3, for |x| ? 8. How much work is done in compressing the spring from its equilibrium position (x = 0) to x = -0.5? Round to two decimal places when appropriate.
A. 4.24 J B. 339.2 J C. 678.4 J D. 2.12 J
Shade the solution set in the xy-plane.y ? -x2 - 6x - 4y ? x2 + 6x + 4
A. 
B. 
C. 
D. 
Find the product of the two binomials.(x + 9y)(x - 3y)
A. x2 + 3xy - 27y2 B. x + 6xy - 27y C. x2 + 6xy - 27y2 D. x2 + 6xy + 6y2
The graph below is one complete cycle of the graph of an equation containing a trigonometric function. Find an equation to match the graph. If you are using a graphing calculator, graph your equation to verify that it is correct.
?
?
A. 
B. ?
C. ?
D. ?
E. ?