2cos(4x)+1=0

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Solution for 2cos(4x)+1=0 equation:


Simplifying
2cos(4x) + 1 = 0

Remove parenthesis around (4x)
2cos * 4x + 1 = 0

Reorder the terms for easier multiplication:
2 * 4cos * x + 1 = 0

Multiply 2 * 4
8cos * x + 1 = 0

Multiply cos * x
8cosx + 1 = 0

Reorder the terms:
1 + 8cosx = 0

Solving
1 + 8cosx = 0

Solving for variable 'c'.

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

Add '-1' to each side of the equation.
1 + -1 + 8cosx = 0 + -1

Combine like terms: 1 + -1 = 0
0 + 8cosx = 0 + -1
8cosx = 0 + -1

Combine like terms: 0 + -1 = -1
8cosx = -1

Divide each side by '8osx'.
c = -0.125o-1s-1x-1

Simplifying
c = -0.125o-1s-1x-1

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