A hypothetical management science problem requires us to find the cheapest "supercircuit" in a graph. Three algorithms are available: Algorithm 1, Algorithm 2, and Algorithm 3.Algorithm 2 sometimes produces the cheapest supercircuit but most of the time it produces a supercircuit that is only close to being the cheapest. The amount of time it takes to carry out Algorithm 2 is: 1 second for a graph with 1 vertex, 2 seconds for a graph with 2 vertices, . . . 5 seconds for a graph with 5 vertices, and so on. Algorithm 2 is
A. an approximate and inefficient algorithm.
B. an optimal and efficient algorithm.
C. an optimal and inefficient algorithm.
D. an approximate and efficient algorithm.
E. none of these
Answer: D
Mathematics
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Evaluate the expression.-5-3
A. - 
B. 
C. 125
D. -125
Mathematics
Find the nonreal complex solutions of the equation.5x2 - 5x + 7 = 0
A. 
B. 
C. 
D. 
Mathematics
Use the graph of f to evaluate the given expression(s).f(-4) and f(2)
A. f(-4) = 4; f(2) = 0 B. f(-4) = 0; f(2) = 4 C. f(-4) = 0; f(2) = -4 D. f(-4) = 1; f(2) = -4
Mathematics
Solve.
= 
A. 2 B. 3 C. 7 D. 4
Mathematics