HW8

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Brigham Young University, Idaho *

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112

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Mathematics

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Apr 3, 2024

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pdf

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Question: Solve the equation \(2 \sin^2(x) - 3 \sin(x) + 1 = 0\) for \(0 \leq x \leq 2\pi\). Answer: \(x = \frac{\pi}{3}\) or \(x = \frac{5\pi}{3}\). --- Question: Find the sum of the first 10 terms of the arithmetic sequence: 3, 6, 9, 12, ... Answer: Sum = \(\frac{n}{2}(a_1 + a_n) = \frac{10}{2}(3 + 30) = 165\). --- Question: Calculate the area of a sector of a circle with radius \(8\) units and central angle \(60^\circ\). Answer: Area = \(\frac{60}{360} \times \pi \times 8^2 = \frac{64\pi}{3}\) square units. --- Question: If \(f(x) = \frac{x^2 - 4}{x + 2}\), find \(f(-2)\). Answer: \(f(-2)\) is undefined because it results in division by zero. --- Question: Determine the solution set for the inequality \(4x + 5 \leq 3x - 2\). Answer: \(x \leq -7\). --- Question: Find the equation of the line passing through the points \((-1, 4)\) and \((3, -2)\). Answer: The equation is \(y = -\frac{3}{2}x + \frac{5}{2}\). --- Question: Solve the equation \(3^{2x - 1} = 27\). Answer: \(x = 2\).
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