cos(3x)+cos(5x)=cos(x)

Simple and best practice solution for cos(3x)+cos(5x)=cos(x) 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(3x)+cos(5x)=cos(x) equation:


Simplifying
cos(3x) + cos(5x) = cos(x)

Remove parenthesis around (3x)
cos * 3x + cos(5x) = cos(x)

Reorder the terms for easier multiplication:
3cos * x + cos(5x) = cos(x)

Multiply cos * x
3cosx + cos(5x) = cos(x)

Remove parenthesis around (5x)
3cosx + cos * 5x = cos(x)

Reorder the terms for easier multiplication:
3cosx + 5cos * x = cos(x)

Multiply cos * x
3cosx + 5cosx = cos(x)

Combine like terms: 3cosx + 5cosx = 8cosx
8cosx = cos(x)

Multiply cos * x
8cosx = cosx

Solving
8cosx = cosx

Solving for variable 'c'.

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

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

Combine like terms: 8cosx + -1cosx = 7cosx
7cosx = cosx + -1cosx

Combine like terms: cosx + -1cosx = 0
7cosx = 0

Divide each side by '7'.
cosx = 0

Simplifying
cosx = 0

The solution to this equation could not be determined.

See similar equations:

| 5-x=x^2+x+1 | | x^2-6ax-12=0 | | 5x-2=x+4 | | 9x-7=5x+57 | | (11/4)-(17/7)= | | (11/4)-(17/7) | | 1-6x=4x-(3-2x) | | 10-5x=45 | | 14+6x=86 | | 4(x-3)=-2.4 | | 6(a+1)=41.4 | | 5x-(4-2x)=2-2x | | 24.5t-4.9(t^2)=0 | | 4x=3x-5x | | 24.5t-4.9t^2=0 | | 3d+1=2d+9 | | 2x2/3x3x2/7x5 | | 13-2,5x=22/12x | | 2x2/3x3x2 | | p+2=5 | | X=8*ln(x) | | log8(3)/log2(3) | | log3(8)/log3(2) | | -3-(6-4p)= | | n/12*7=49 | | K^4+6k^3+4k^2-15k+6=0 | | 7x*x-14x-6=0 | | 4x+1=5x+9 | | 7x+7y=161 | | 6x+2+3e-e=26 | | 100[0.06(q+8)]= | | h=5t^2+3 |

Equations solver categories