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Simplifying -1sinx + 1 = 2cos2x Reorder the terms: 1 + -1insx = 2cos2x Solving 1 + -1insx = 2cos2x Solving for variable 'i'. Move all terms containing i to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -1insx = -1 + 2cos2x Combine like terms: 1 + -1 = 0 0 + -1insx = -1 + 2cos2x -1insx = -1 + 2cos2x Divide each side by '-1nsx'. i = n-1s-1x-1 + -2cn-1os Simplifying i = n-1s-1x-1 + -2cn-1os Reorder the terms: i = -2cn-1os + n-1s-1x-1
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