Solve the problem.Find a vector v whose magnitude is 5 and whose component in the i direction is four times the component in the j direction.
A. v = 
i + 
j
or
v = - 
i - 
j
B. v = 
i + 
j
or
v = - 
i - 
j
C. v = 
i - 
j
or
v = - 
i + 
j
D. v = - 
i + 
j
or
v = 
i - 
j
Answer: A
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Evaluate the integral using the given substitution.
, u = 9 - s4
A. -4s3
+ C
B. 
C. -4
+ C
D. 
+ C
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in a circle of radius 
Round to two decimal places, if necessary.
A. 21.26 ft B. 0.05 ft C. 10.59 ft D. 606.5 ft
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