Determine the principal value without using a calculator.3

A. 3
B. Not real number
C. 9
D. 5


Answer: A

Mathematics

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Use the horizontal line test to determine whether the function is one-to-one.

A. Yes B. No

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A. y2 = 44x B. x2 = -44y C. x2 = 44y D. y2 = 11x

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A. x = -2, x = -9 B. none C. x = -2, x = 2 D. x = -2, x = 2, x = -9

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Solve each system of equations using matrices (row operations). If the system has no solution, say that it is inconsistent.x - y + 2z + w = 4y + z = 5z - w = 1

A. {(6 - 4w, 4 - w, 1 + w, w)} B. {(6, 4, 1, w)} C. ? D. {(2, 3, 2, 1)}

Mathematics