Simplify the complex rational expression using Method I or Method II.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Find the magnitude of u × v and the unit vector parallel to u × v in the direction of u × v.u = 2i + 2j - k, v = -i + k
A. 9; 
i + 
j - 
k
B. 9; 
i - 
j + 
k
C. 3; 
i - 
j + 
k
D. 3; 
i + 
j - 
k
Mathematics
Calculate the area of the surface S.S is the lower portion of the sphere x2 + y2 + z2 = 49 cut by the cone z = 
.
A. 14
?
B. 49
C. 49
?
D. 98
?
Mathematics
Differentiate.
Mathematics
Solve and graph. Write the result in interval notation.
x < -5
A. 
B. 
C. 
D. 
Mathematics