Find the identical expression for the following.
?

?

A.
B. ?
C.
D. ?
E. 1


Answer: C

Mathematics

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Find the center of mass of a thin plate of constant density covering the given region.The region in the first and fourth quadrants enclosed by the curves  and  and by the lines  and 

A.  =  = 0
B.  =  = 0
C.  = 0,  = 
D.  =  = 0

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Add. + 

A. 0
B. - 
C.
D.

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Name the quadrant in which the angle ? lies.csc ? > 0, sec ? > 0

A. I B. II C. III D. IV

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Ohm's Law for the current I in a circuit with voltage E, resistance R, capacitance reactance XC, and inductive reactance XLis  Use this law to solve the problem.Find R if    and 

A.  + i
B.

1 + i

C.
1 + i

D.
 + i

Mathematics