cos(3x)+cos(2x)-cos(x)=0

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Solution for cos(3x)+cos(2x)-cos(x)=0 equation:


Simplifying
cos(3x) + cos(2x) + -1cos(x) = 0

Remove parenthesis around (3x)
cos * 3x + cos(2x) + -1cos(x) = 0

Reorder the terms for easier multiplication:
3cos * x + cos(2x) + -1cos(x) = 0

Multiply cos * x
3cosx + cos(2x) + -1cos(x) = 0

Remove parenthesis around (2x)
3cosx + cos * 2x + -1cos(x) = 0

Reorder the terms for easier multiplication:
3cosx + 2cos * x + -1cos(x) = 0

Multiply cos * x
3cosx + 2cosx + -1cos(x) = 0

Multiply cos * x
3cosx + 2cosx + -1cosx = 0

Combine like terms: 3cosx + 2cosx = 5cosx
5cosx + -1cosx = 0

Combine like terms: 5cosx + -1cosx = 4cosx
4cosx = 0

Solving
4cosx = 0

Solving for variable 'c'.

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

Divide each side by '4'.
cosx = 0

Simplifying
cosx = 0

The solution to this equation could not be determined.

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