Add or subtract as indicated. If terms are not like radicals and cannot be combined, so state. Assume all variables represent nonnegative real numbers.6
- 6
A. 72
B. 2
C. 2
D. 12
Answer: D
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Reverse the order of integration and then evaluate the integral.
A. 
tan-1 49 - 3 ln 2402
B. 147 tan-1 49 - 
ln 2402
C. 
tan-1 49 - 
ln 2402
D. 147 tan-1 49 - 3 ln 2402
Evaluate the integral.
dx
A. 
sin-1 x - 
sin-1 x + 
x
+ C
B. 
sin-1 x - 
x sin-1 x - 
+ C
C. 
sin-1 x - 
cos-1 x + 
+ C
D. 
sin-1 x + 
sin-1 x - 
x
+ C
Solve.Elaine has a grassy patch of land on her farm that is a rectangle measuring 20 feet by 50 feet. So her goat can eat grass while Elaine is busy with other farm work, she drove two posts into the ground and fastened a rope to each post, passing the rope through a metal ring on the goat's collar. When the goat pulls on the rope while walking, its path is an ellipse. (See the figure.) If the goat can just reach all four sides of the rectangular patch, find the equation of the elliptical path.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Given matrix A, find the indicated minor or cofactor.Find the cofactor A21.A = 
A. -27 B. -11 C. 11 D. 27