Find the indicated roots. Write the answer in trigonometric form.Fourth roots of 16(cos 280° + i sin 280°)
A. 2(cos 70° + i sin 70°), 2(cos 160° + i sin 160°), 2(cos 250° + i sin 250°), 2(cos 340° + i sin 340°)
B. 2(cos 140° + i sin 140°), 2(cos 230° + i sin 230°), 2(cos 320° + i sin 320°), 2(cos 50° + i sin 50°)
C. 2(cos 70° + i sin 70°), 2(cos 160° + i sin 160°), 2(cos 320° + i sin 320°), 2(cos 50° + i sin 50°)
D. 2(cos 280° + i sin 280°), 2(cos 370° + i sin 370°), 2(cos 460° + i sin 460°), 2(cos 190° + i sin 190°)
Answer: A
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The following graph shows a man's height H, in inches, at age t years.
?
?
A: Explain in practical terms the meaning of 
.
?
B: During what period is positive?
What will be an ideal response?
Add the polynomials.(- 
x2 + 
x + 
) + (- 
x2 - 
x - 
)
A. - 
x2 - 
x + 
B. 4x2 - 2x - 
C. - 
x6 + 
D. - 
x4 - 
x2 + 
Answer the question, concerning the use of substitution in integration.If we use u = x2 as a substitution to find 
then which of the following would be a correct result?
A. 
B. 
C. 
D. None of the above
Determine whether the improper integral is convergent or divergent.
A. Convergent B. Divergent