cos(4x)=cos(2x)

Simple and best practice solution for cos(4x)=cos(2x) equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

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


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

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

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

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

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

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

Multiply cos * x
4cosx = 2cosx

Solving
4cosx = 2cosx

Solving for variable 'c'.

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

Add '-2cosx' to each side of the equation.
4cosx + -2cosx = 2cosx + -2cosx

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

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

Divide each side by '2'.
cosx = 0

Simplifying
cosx = 0

The solution to this equation could not be determined.

See similar equations:

| 55-x=45 | | 5c+7=3c+22 | | X=95+1.5x | | X=95+-1.5x | | 80x-120=3x | | 16-2x(7-5)+6= | | 20x-9=50x+3 | | 6-8=72 | | 0.00011304*x+1=(0.000108518*x)+3.61 | | 0.00011304*x+3=(0.000108518*x)+3.61 | | 0.00011304*x+2=(0.000108518*x)+3.61 | | 0.00011304*x=(0.000108518*x)+3.61 | | x^4+12x^3+56x^2+120x+81=0 | | 0.00011304*x=0.000108518*x+3.61 | | 1000*x=(1000*x)+1.1 | | 1000*x=(1000*x)+1 | | -13=x-y^2 | | (a+4)(a+6)= | | 36m^2-68m-80=0 | | x-1488=0 | | 2x^2-10=7x | | x-1488=x+123 | | 0.05(7t-8)=0.35(t+4)-1.80 | | 3a+2a+2=24 | | 7x+4=16x-20 | | 23x+10=3(6x+2)+5x+4 | | 8x+4=4x+32 | | x=1.8y+32 | | (2+5x^2)X=4 | | 10x+15y=493.5 | | 5y+3=-27 | | 3(x+3)+42=6x-3(x-5) |

Equations solver categories