Find the angle between v and w. Round to one decimal place, if necessary.v = 3i + j + 2k and w = i + 2j - 3k
A. -4.1°
B. 94.1°
C. 91.7°
D. 93.1°
Answer: B
Mathematics
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A value of sinh x or cosh x is given. Use the definitions and the identity 
to find the value of the other indicated hyperbolic function.cosh x = 
, x < 0, coth x =
A. 
B. - 
C. - 
D. - 
Mathematics
Find the derivative of the function.f(x) = 4x2 + 2x + 4 - 
A. f'(x) = 8x + 2 + 
B. f'(x) = 4x + 2 - 
C. f'(x) = 8x2 + 2 - 
D. f'(x) = 4x2 + 2 + 
Mathematics
Use the appropriate geometric formula from the following list to find the requested measure. 
The perimeter of a square with side of length 5 inches
A. 28 in. B. 21 in. C. 25 in. D. 20 in.
Mathematics
Find the requested characteristic.Find the range for the graph of f(x) = cot (3x).
A. (-?, -1] ? [1, ?) B. [0, 2?] C. (-1,1) D. (-?, ?)
Mathematics