Write the complex number in polar form. Express the argument in degrees.-3
A. 3(cos 90° + i sin 90°)
B. 3(cos 180° + i sin 180°)
C. 3(cos 0° + i sin 0°)
D. 3(cos 270° + i sin 270°)
Answer: B
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Estimate error made by using the partial sum S4 as an approximation to the sum S of the entire series.
, -1 < t ? 1
A. 
B. 
C. 
D. 0.20
Solve the problem.Let u = 6i + j, v = i + j, and w = i - j. Find scalars a and b such that u = av + bw.
A. 6v -1w B. 3.5 v + 2.5w C. 6v + 1w D. 0.29 v + 0.40w
Solve the problem.A bike road race starts at an elevation of 610 feet and passes through 5 stages where the elevation changes by 87 feet, -707 feet, -325 feet, 239 feet, and -70 feet. At what elevation does the race end?
A. -2038 feet B. 1399 feet C. 2038 feet D. -166 feet
Identify the curve.
?
?
?
A. line B. hyperbola C. circle D. no graph E. parabola