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Simplifying -1sen(x) + -4cos(2x) = 0 Multiply ens * x -1ensx + -4cos(2x) = 0 Remove parenthesis around (2x) -1ensx + -4cos * 2x = 0 Reorder the terms for easier multiplication: -1ensx + -4 * 2cos * x = 0 Multiply -4 * 2 -1ensx + -8cos * x = 0 Multiply cos * x -1ensx + -8cosx = 0 Reorder the terms: -8cosx + -1ensx = 0 Solving -8cosx + -1ensx = 0 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add 'ensx' to each side of the equation. -8cosx + -1ensx + ensx = 0 + ensx Combine like terms: -1ensx + ensx = 0 -8cosx + 0 = 0 + ensx -8cosx = 0 + ensx Remove the zero: -8cosx = ensx Divide each side by '-8osx'. c = -0.125eno-1 Simplifying c = -0.125eno-1
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