F(x)=x^3cos(2x)

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Solution for F(x)=x^3cos(2x) equation:


Simplifying
F(x) = x3cos(2x)

Multiply F * x
xF = x3cos(2x)

Remove parenthesis around (2x)
xF = cosx3 * 2x

Reorder the terms for easier multiplication:
xF = 2cosx3 * x

Multiply cosx3 * x
xF = 2cosx4

Solving
xF = 2cosx4

Solving for variable 'x'.

Reorder the terms:
-2cosx4 + xF = 2cosx4 + -2cosx4

Combine like terms: 2cosx4 + -2cosx4 = 0
-2cosx4 + xF = 0

Factor out the Greatest Common Factor (GCF), 'x'.
x(-2cosx3 + F) = 0

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

Set the factor '(-2cosx3 + F)' equal to zero and attempt to solve: Simplifying -2cosx3 + F = 0 Reorder the terms: F + -2cosx3 = 0 Solving F + -2cosx3 = 0 Move all terms containing x to the left, all other terms to the right. Add '-1F' to each side of the equation. F + -1F + -2cosx3 = 0 + -1F Combine like terms: F + -1F = 0 0 + -2cosx3 = 0 + -1F -2cosx3 = 0 + -1F Remove the zero: -2cosx3 = -1F Divide each side by '-2cos'. x3 = 0.5c-1o-1s-1F Simplifying x3 = 0.5c-1o-1s-1F The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Solution

x = {0}

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