Complete the identity.sin (5?) sin (7?) cos (5?) cos (7?) = ?

A. cos2 (70?)
B.
C.
D.

Answer: C

Mathematics

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Using Green's Theorem, find the outward flux of F across the closed curve C.F = - i ; C is the region defined by the polar coordinate inequalities  and 

A. 0
B.
C.
D. - 

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Write the partial fraction decomposition of the rational expression.

A.  - 
B.  + 
C.  + 
D.  + 

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Solve the equation. = 9

A. {9}
B.
C.
D.

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Find the domain of the function. ? ? ?

A. s = 9
B. all real numbers s ? 9, s ? 0
C. ?s = 9, s = 0
D. all real numbers  s ? 9
E.

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Mathematics