cos(4x)+2*cos^2(x)=0

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Solution for cos(4x)+2*cos^2(x)=0 equation:


Simplifying
cos(4x) + 2cos2(x) = 0

Remove parenthesis around (4x)
cos * 4x + 2cos2(x) = 0

Reorder the terms for easier multiplication:
4cos * x + 2cos2(x) = 0

Multiply cos * x
4cosx + 2cos2(x) = 0

Multiply cos2 * x
4cosx + 2cos2x = 0

Solving
4cosx + 2cos2x = 0

Solving for variable 'c'.

Move all terms containing c to the left, all other terms to the right.

Factor out the Greatest Common Factor (GCF), '2cosx'.
2cosx(2 + s) = 0

Ignore the factor 2.

Subproblem 1

Set the factor 'cosx' equal to zero and attempt to solve: Simplifying cosx = 0 Solving cosx = 0 Move all terms containing c to the left, all other terms to the right. Simplifying cosx = 0 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Subproblem 2

Set the factor '(2 + s)' equal to zero and attempt to solve: Simplifying 2 + s = 0 Solving 2 + s = 0 Move all terms containing c to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + s = 0 + -2 Combine like terms: 2 + -2 = 0 0 + s = 0 + -2 s = 0 + -2 Combine like terms: 0 + -2 = -2 s = -2 Add '-1s' to each side of the equation. s + -1s = -2 + -1s Combine like terms: s + -1s = 0 0 = -2 + -1s Simplifying 0 = -2 + -1s The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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