cos(x)+cos(2x)+cos(4x)=0

Simple and best practice solution for cos(x)+cos(2x)+cos(4x)=0 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(x)+cos(2x)+cos(4x)=0 equation:


Simplifying
cos(x) + cos(2x) + cos(4x) = 0

Multiply cos * x
cosx + cos(2x) + cos(4x) = 0

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

Reorder the terms for easier multiplication:
cosx + 2cos * x + cos(4x) = 0

Multiply cos * x
cosx + 2cosx + cos(4x) = 0

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

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

Multiply cos * x
cosx + 2cosx + 4cosx = 0

Combine like terms: cosx + 2cosx = 3cosx
3cosx + 4cosx = 0

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

Solving
7cosx = 0

Solving for variable 'c'.

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

Divide each side by '7'.
cosx = 0

Simplifying
cosx = 0

The solution to this equation could not be determined.

See similar equations:

| 3x-5x+7=5x-20-5x | | 6(7x)=168 | | -9x+13=0 | | -9x+8=-5 | | -3x-6x+8=6x-6x-5 | | cotx=-1/3 | | 4y+y=21 | | 11(x-4)=-88 | | 24y^3+12xy+6xy^2=0 | | 4n^3+6n^2-2=0 | | 3-(4x+6)=7-5x(x+4) | | 2/5x^2=0 | | 15y=30+15y+15y | | ax(x+1)= | | 2(10x)=780 | | 1/2(v^2-81) | | 1/2(v^-81) | | x*3+2x+20=0 | | F(2)=2+5 | | 40/360 | | e^2-5x=1190 | | 90=1/2(v^2-25) | | -8-3x=-4x | | 8v+46=-9v+56 | | 8v+46=56-46 | | 16x^2-24+xy+9y^2=0 | | -8-3x=4x | | 2x+10=4x+15 | | X^2+17xy-84y^2=0 | | U=4(9n+33)+9(n+1) | | U=3(9n+33)+8(n+1) | | 3xy^2+3x^2y-9xy^2+14x^2y= |

Equations solver categories