cos(x)+cos(3x)=cos(2x)+cos(4x)

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Solution for cos(x)+cos(3x)=cos(2x)+cos(4x) equation:


Simplifying
cos(x) + cos(3x) = cos(2x) + cos(4x)

Multiply cos * x
cosx + cos(3x) = cos(2x) + cos(4x)

Remove parenthesis around (3x)
cosx + cos * 3x = cos(2x) + cos(4x)

Reorder the terms for easier multiplication:
cosx + 3cos * x = cos(2x) + cos(4x)

Multiply cos * x
cosx + 3cosx = cos(2x) + cos(4x)

Combine like terms: cosx + 3cosx = 4cosx
4cosx = cos(2x) + cos(4x)

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

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

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

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

Reorder the terms for easier multiplication:
4cosx = 2cosx + 4cos * x

Multiply cos * x
4cosx = 2cosx + 4cosx

Combine like terms: 2cosx + 4cosx = 6cosx
4cosx = 6cosx

Solving
4cosx = 6cosx

Solving for variable 'c'.

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

Add '-6cosx' to each side of the equation.
4cosx + -6cosx = 6cosx + -6cosx

Combine like terms: 4cosx + -6cosx = -2cosx
-2cosx = 6cosx + -6cosx

Combine like terms: 6cosx + -6cosx = 0
-2cosx = 0

Divide each side by '-2'.
cosx = 0

Simplifying
cosx = 0

The solution to this equation could not be determined.

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