Solve the problem.Suppose T is a tree with 21 vertices. Then
A. T has no bridges.
B. T has 20 bridges.
C. T has one bridge.
D. T can have any number of bridges.
E. none of these
Answer: B
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Find the general solution of the differential equation. Use C, C1, C2, . . . to denote arbitrary constants. If used, do not simplify hyperbolic functions.y'(t) = 10t4 - 12t2 + 8 - 12t-3
A. y = 2t5 - 4t3 + 8t - 6t-2 + C B. y = 2t5 - 4t3 - 8t - 6t-2 + C C. y = 2t5 - 4t3 + 8t + 6t-2 + C D. y = 2t5 - 4t3 + 8 + 6t-2 + C
Write an equation for the ellipse.x-intercepts (±2, 0); y-intercepts (0, ±8)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Add, first finding the LCD. Simplify, if possible.
+ 
A. 
B. 
C. 
D. 3
Find the domain of 
.
A. all real numbers except x = 8 and x = -4 B. all real numbers C. all real numbers except x = 4 and x = -8 D. all real numbers except x = -4, x = 4 and x = -8 E. all real numbers except x = -8