Find the limit, if it exists. 
Does not exist
Mathematics
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Use implicit differentiation to find dy/dx.2xy - y2 = 1
A. 
B. 
C. 
D. 
Mathematics
Find the perimeter.
A. 89 m B. 138 m C. 178 m D. 1960 m
Mathematics
Solve the problem.Julie and Eric row their boat (at a constant speed) 45 miles downstream for 5 hours, helped by the current. Rowing at the same rate, the trip back against the current takes 9 hours. Find the rate of the current.
A. 1.5 mph B. 7 mph C. 2 mph D. 3 mph
Mathematics
Use the vectors v, u, w, and z to draw the indicated vector. 
v - w
A. 
B. 
C. 
D. 
Mathematics