4cos^2(x)-cos(x)=0

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


Simplifying
4cos2(x) + -1cos(x) = 0

Multiply cos2 * x
4cos2x + -1cos(x) = 0

Multiply cos * x
4cos2x + -1cosx = 0

Reorder the terms:
-1cosx + 4cos2x = 0

Solving
-1cosx + 4cos2x = 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), 'cosx'.
cosx(-1 + 4s) = 0

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 '(-1 + 4s)' equal to zero and attempt to solve: Simplifying -1 + 4s = 0 Solving -1 + 4s = 0 Move all terms containing c to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + 4s = 0 + 1 Combine like terms: -1 + 1 = 0 0 + 4s = 0 + 1 4s = 0 + 1 Combine like terms: 0 + 1 = 1 4s = 1 Add '-4s' to each side of the equation. 4s + -4s = 1 + -4s Combine like terms: 4s + -4s = 0 0 = 1 + -4s Simplifying 0 = 1 + -4s 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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