Perform the indicated operations and simplify.
A. - 2
B. 
C. 
D. - 
Answer: D
Mathematics
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Assuming that the equation defines a differential function of x, find Dxy by implicit differentiation.2xy - y2 = 1
A. 
B. 
C. 
D. 
Mathematics
The polar equation of the graph is either r = a + b cos ? or r = a + b sin ?, a > 0, b > 0. Match the graph to one of the equations. 
A. r = 4 + 2 cos ? B. r = 4 + 2 sin ? C. r = 2 + 4 sin ? D. r = 2 + 4 cos ?
Mathematics
Simplify.
A. -4 B. -15 C. -3 D. 3
Mathematics
Solve the logarithmic equation.ln x + ln(x - 1) = ln 2
A. {-1}
B. 
C. {2}
D. {2, -1}
Mathematics