Solve and graph.x2 - 1 ? 0
A. x ? 1
B. x ? -1 or x ? 1
C. -1 ? x ? 1
D. x ? -1
Answer: C
Mathematics
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List the set of even numbers greater than 2.
A. {4, 6, 8, 10, ...} B. {6, 8, 10, 12, ...} C. {5, 7, 9, 11, ...} D. {2, 4, 6, 8, ...}
Mathematics
Find the particular solution to the given differential equation that satisfies the given conditions.D2y - 4 Dy + 8y = 0; y = 0 when x = 0 and y = e?/2 when x = 
A. y = ex sin 2x B. y = e2x(c1 sin 2x + c2 cos 2x) C. y = e2x sin 2x D. y = e2x cos 2x
Mathematics
The graph of a function is given. Decide whether it is even, odd, or neither.
A. even B. odd C. neither
Mathematics
Select the curve represented by the parametric equations.
?
?
A. ?
B. ?
C. ?
?
D. ?
E. ?
Mathematics