cos(x)+cox(7x)-cox(4x)=0

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Solution for cos(x)+cox(7x)-cox(4x)=0 equation: 


Simplifying
cos(x) + cox(7x) + -1cox(4x) = 0

Multiply cos * x
cosx + cox(7x) + -1cox(4x) = 0

Remove parenthesis around (7x)
cosx + cox * 7x + -1cox(4x) = 0

Reorder the terms for easier multiplication:
cosx + 7cox * x + -1cox(4x) = 0

Multiply cox * x
cosx + 7cox2 + -1cox(4x) = 0

Remove parenthesis around (4x)
cosx + 7cox2 + -1cox * 4x = 0

Reorder the terms for easier multiplication:
cosx + 7cox2 + -1 * 4cox * x = 0

Multiply -1 * 4
cosx + 7cox2 + -4cox * x = 0

Multiply cox * x
cosx + 7cox2 + -4cox2 = 0

Combine like terms: 7cox2 + -4cox2 = 3cox2
cosx + 3cox2 = 0

Solving
cosx + 3cox2 = 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), 'cox'.
cox(s + 3x) = 0


Subproblem 1
Set the factor 'cox' equal to zero and attempt to solve:

Simplifying
cox = 0

Solving
cox = 0

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

Simplifying
cox = 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 '(s + 3x)' equal to zero and attempt to solve:

Simplifying
s + 3x = 0

Solving
s + 3x = 0

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

Add '-1s' to each side of the equation.
s + -1s + 3x = 0 + -1s

Combine like terms: s + -1s = 0
0 + 3x = 0 + -1s
3x = 0 + -1s
Remove the zero:
3x = -1s

Add '-3x' to each side of the equation.
3x + -3x = -1s + -3x

Combine like terms: 3x + -3x = 0
0 = -1s + -3x

Simplifying
0 = -1s + -3x

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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