Multiply and simplify.( + )( - )

A. 16
B. 13 - 2
C. 10
D. 13 - 2


Answer: C

Mathematics

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Use integration by parts to establish a reduction formula for the integral., n ? 1

A.  = cotn-1 x - 
B.  =  cotn-2 x - 
C.  = - cotn-1 x +  
D.  =  cotn-1 x + 

Mathematics

Solve the problem.The position (in centimeters) of an object oscillating up and down at the end of a spring is given by  at time t (in seconds). The value of A is the amplitude of the motion, k is a measure of the stiffness of the spring, and m is the mass of the object. How fast is the object moving when it is moving fastest?

A. A cm/sec
B. A cm/sec
C.  cm/sec
D. A cm/sec

Mathematics

1.1379 to the nearest tenth

A. 1.1 B. 1.14 C. 1.2 D. 1.0

Mathematics

Find the vertices and foci of the given ellipse.3x2 + 5y2 = 15

A. Vertices: (, 0) and (-, 0);
Foci: (, 0) and (-, 0)
B. Vertices: (0, ) and (0, -);
Foci: (0, ) and (0, -)
C. Vertices: (5, 0) and (-5, 0);
Foci: (2, 0) and (-2, 0)
D. Vertices: (0, ) and (0, -);
 Foci: (0, ) and (0, -)

Mathematics