Find 
for the given function.y = 3 cot 
A. 
csc2 
cot 
B. -6 csc 
C. 6 csc2 
cot 
D. - 
csc2 
Answer: A
Mathematics
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Estimate the magnitude of the error involved in using the sum of the first four terms to approximate the sum of the entire series.
A. 
< 1.98 × 10-2
B. 
< 1.15 × 10-3
C. 
< 4.48 × 10-3
D. 
< 1.80 × 10-3
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Solve the problem.Evaluate 
at (x, y, z) = (5, 3, 3) for the function u = p2 - q2 - r; p = xy, q = y2, r = xz.
A. 93 B. 27 C. 33 D. 87
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Solve the problem.Express 75° as ? - ?, where sin ? and sin ? are known exactly.
A. 105°- 30° B. 145°- 70° C. 90°- 15° D. 120° - 45°
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Solve the problem.One number is four more than a second number. Two times the first number is 8 more than four times the second number.
A. - 8 and - 12 B. 4 and 0 C. 5 and 1 D. 3 and - 1
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