Decide on a suitable restriction on the domain so that the function is one-to-one and the range is not changed.f(x) = x4 + x2 + 16
A. (-?, 15)
B. [0, ?)
C. [-16, 16)
D. [-16, ?)
Answer: B
Mathematics
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Use Stokes' Theorem to calculate the circulation of the field F around the curve C in the indicated direction.F = 3xi + 2xj + 7zk; C: the cap cut from the upper hemisphere x2 + y2 + z2 = 16 
by the cylinder 
A. 2? B. 8? C. 3? D. 4?
Mathematics
Solve the equation.
= x + 6
A. 5 B. 7 C. -7 D. -6
Mathematics
Find all complex solutions.16x3 + x = 0
A. 0, ±
i
B. 0
C. 0, ±
i
D. ±
i
Mathematics
Solve the following circle graph problems.If clothing is represented by 60° on a circle graph showing all expenses and the total expenses are $1,368, how much are the clothing expenses?
A. $228 B. $285 C. $171 D. $342
Mathematics