Find all numbers that must be excluded from the domain of the rational expression.
A. x ? 
B. x ? 5, x ? -5
C. x ? 25
D. x ? 5
Answer: B
Mathematics
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Using Green's Theorem, compute the counterclockwise circulation of F around the closed curve C.F = - 
i + 
j; C is the region defined by the polar coordinate inequalities 2 ? r ? 9 and 
A. 85 B. 0 C. 154 D. 63
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Use the fundamental identities to simplify the expression.cos (-x) cos x - sin (-x) sin x
A. 2 B. 1 C. 0 D. cos2x sin2x
Mathematics
Graph the polar equation.r = ?, ? ? 0 
A. 
B. 
C. 
D. 
Mathematics
Find the product AB.A = 
, B = 
A. 
B. 
C. 
D. Not defined
Mathematics