Find the length and direction (when defined) of u × v.u = 2i + 2j - k, v = -i + k
A. 3; 
i - 
j + 
k
B. 9; 
i + 
j - 
k
C. 3; 
i + 
j - 
k
D. 9; 
i - 
j + 
k
Answer: A
Mathematics
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sec2 3x dx
A. - 
B. 
C. e
D. 3e
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A. 
B. 
C. 
D. 
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Factor. If prime, so state.8a4b - 18b3
A. 2b(2a - 3b)2 B. prime C. 2b(2a2 + 3b)(2a2 - 3b) D. 2b(2a + 3b)2
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Find the domain of the function.f(x) = 
A. all real numbers, or (-?,?)
B. 
, or
C. 
, or 
? 
D. 
, or 
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