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Simplifying sin(x) + -2cos(2x) = 0 Multiply ins * x insx + -2cos(2x) = 0 Remove parenthesis around (2x) insx + -2cos * 2x = 0 Reorder the terms for easier multiplication: insx + -2 * 2cos * x = 0 Multiply -2 * 2 insx + -4cos * x = 0 Multiply cos * x insx + -4cosx = 0 Reorder the terms: -4cosx + insx = 0 Solving -4cosx + insx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-1insx' to each side of the equation. -4cosx + insx + -1insx = 0 + -1insx Combine like terms: insx + -1insx = 0 -4cosx + 0 = 0 + -1insx -4cosx = 0 + -1insx Remove the zero: -4cosx = -1insx Divide each side by '-4osx'. c = 0.25ino-1 Simplifying c = 0.25ino-1
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