Cos(5x)=-cos(x)

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Solution for Cos(5x)=-cos(x) equation:


Simplifying
Cos(5x) = -1cos(x)

Remove parenthesis around (5x)
osC * 5x = -1cos(x)

Reorder the terms for easier multiplication:
5osC * x = -1cos(x)

Multiply osC * x
5osxC = -1cos(x)

Multiply cos * x
5osxC = -1cosx

Solving
5osxC = -1cosx

Solving for variable 'o'.

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

Add 'cosx' to each side of the equation.
cosx + 5osxC = -1cosx + cosx

Combine like terms: -1cosx + cosx = 0
cosx + 5osxC = 0

Factor out the Greatest Common Factor (GCF), 'osx'.
osx(c + 5C) = 0

Subproblem 1

Set the factor 'osx' equal to zero and attempt to solve: Simplifying osx = 0 Solving osx = 0 Move all terms containing o to the left, all other terms to the right. Simplifying osx = 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 '(c + 5C)' equal to zero and attempt to solve: Simplifying c + 5C = 0 Reorder the terms: 5C + c = 0 Solving 5C + c = 0 Move all terms containing o to the left, all other terms to the right. Add '-5C' to each side of the equation. 5C + -5C + c = 0 + -5C Combine like terms: 5C + -5C = 0 0 + c = 0 + -5C c = 0 + -5C Remove the zero: c = -5C Add '-1c' to each side of the equation. c + -1c = -5C + -1c Combine like terms: c + -1c = 0 0 = -5C + -1c Simplifying 0 = -5C + -1c 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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