Find the unit vector having the same direction as v.v = -12i - 5j
A. u = 
i + 
j
B. u = -156i - 65j
C. u = - 
i - 
j
D. u = - 
i - 
j
Answer: D
Mathematics
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Find the derivative.y = 
A. cos (x3) B. sin (x3) C. 6x5 cos (x3) D. cos (x3) - 1
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Add.-7
+ 2
A. 5
B. -9
C. -5
D. 9
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Find the domain of the composite function f?g. Write the domain in interval notation.f(x) = x + 3, g(x) = 
A. (-?, -9) ? (-9, ?) B. (-?, ?) C. (-?, -6) ? (-6, ?) D. (-?, -6) ? (-6, -3) ? (-3, ?)
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Solve the equation by the method of your choice. Simplify irrational solutions, if possible.3x2 - 5x - 8 = 0
A. 
B. 
C. 
D. 
Mathematics