sin^3(2x)=sin(2x)

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Solution for sin^3(2x)=sin(2x) equation:


Simplifying
sin3(2x) = sin(2x)

Remove parenthesis around (2x)
in3s * 2x = sin(2x)

Reorder the terms for easier multiplication:
2in3s * x = sin(2x)

Multiply in3s * x
2in3sx = sin(2x)

Remove parenthesis around (2x)
2in3sx = ins * 2x

Reorder the terms for easier multiplication:
2in3sx = 2ins * x

Multiply ins * x
2in3sx = 2insx

Solving
2in3sx = 2insx

Solving for variable 'i'.

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

Add '-2insx' to each side of the equation.
-2insx + 2in3sx = 2insx + -2insx

Combine like terms: 2insx + -2insx = 0
-2insx + 2in3sx = 0

Factor out the Greatest Common Factor (GCF), '2insx'.
2insx(-1 + n2) = 0

Factor a difference between two squares.
2insx((1 + n)(-1 + n)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor 'insx' equal to zero and attempt to solve: Simplifying insx = 0 Solving insx = 0 Move all terms containing i to the left, all other terms to the right. Simplifying insx = 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 + n)' equal to zero and attempt to solve: Simplifying 1 + n = 0 Solving 1 + n = 0 Move all terms containing i to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + n = 0 + -1 Combine like terms: 1 + -1 = 0 0 + n = 0 + -1 n = 0 + -1 Combine like terms: 0 + -1 = -1 n = -1 Add '-1n' to each side of the equation. n + -1n = -1 + -1n Combine like terms: n + -1n = 0 0 = -1 + -1n Simplifying 0 = -1 + -1n The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Subproblem 3

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