The rectangular coordinates of a point are given. Find polar coordinates for the point.(
, -1)
A. 
B. 
C. 
D. 
Answer: C
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Find the unit tangent and unit normal vectors t(t) and N(t) for the curve C defined by r(t) = ti + 2t²j. Sketch the graph of C, and show T(t) and N(t) for t = 1.
What will be an ideal response?
Find the flux of the vector field F across the surface S in the indicated direction.F = -5i + 7j + 1k , S is the rectangular surface z = 0, 0 ? x ? 6, and 0 ? y ? 6, direction k
A. -180 B. 0 C. 36 D. 252
Find all the complex roots. Leave your answers in polar form with the argument in degrees.The complex fifth roots of -2i
A. 
(cos 54° + i sin 54°), 
(cos 126° + i sin 126°), 
(cos 198° + i sin 198°), 
(cos 270° + i sin 270°), 
B. 32(cos 54° + i sin 54°), 32(cos 126° + i sin 126°), 32(cos 198° + i sin 198°), 32(cos 270° + i sin 270°), 
C. 
(cos 54° + i sin 54°), 
(cos 126° + i sin 126°), 
(cos 198° + i sin 198°), 
(cos 270° + i sin 270°), 
D. 
(cos 45° + i sin 45°), 
(cos 117° + i sin 117°), 
(cos 189° + i sin 189°), 
(cos 261° + i sin 261°), 
Solve the problem.Let f(x) = x1.78. Approximate f(2.4) to the nearest hundredth.
A. x ? 0.25 B. x ? 4.75 C. x ? 3.99 D. x ? 0.21