How many significant digits are in a measurement of 0.00045g?
A. 2
B. 5
C. 6
D. undetermined
Answer: A
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Evaluate the double integral over the given region.
R = {(x, y): 3 ? x ? 4, 3 ? y ? 4}
A. 
B. ln 
C. 
2
D. 
2
Identify all of the symmetries in the following figure.
A. It has reflection symmetries; it can be reflected across a vertical line through its center, a horizontal line through its center, or either of its diagonals, and its appearance remains the same. It also has rotation symmetries; it can be rotated through 90°, 180°, or 270°, and its appearance remains the same. B. It has rotation symmetries; it can be rotated through 90°, 180°, or 270°, and its appearance remains the same. It also has translation symmetry. C. It has reflection symmetries; it can be reflected across a vertical line through its center or a horizontal line through its center, and its appearance remains the same. It also has rotation symmetry; it can be rotated through 180° and its appearance remains the same. D. None of these.
Evaluate or simplify the exponential expression.-43
A. 256 B. 64 C. -16 D. -64
Evaluate the cylindrical coordinate integral.
A. 2? + ln 2 B. 2 - ln 2 C. 4 - ln 2 D. 4? + ln 2