- #1

osker246

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## Homework Statement

Evaluate the integral; [itex]\frac{2}{L}[/itex][itex]\int[/itex]sin

^{2}([itex]\frac{\pi*x}{L}[/itex])dx from [itex]\frac{2a}{3}[/itex] to [itex]\frac{a}{3}[/itex]. Where L is a constant, using the standard form [itex]\int[/itex]sin

^{2}(ax)dx=[itex]\frac{x}{2}[/itex]-[itex]\frac{1}{4a}[/itex]sin(2ax)+C, where a and C are constants.

## The Attempt at a Solution

Ok, so I am taking a physical chemistry and my first homework assignment is more of a review on my math skills. I know how to intergrate but I have never done a problem asking to evaluate an integral using a standard form. So I am not really sure what to do.

Do I evaluate this?

([itex]\frac{x}{2}[/itex]-[itex]\frac{1}{4a}[/itex]sin(2ax)+C)[itex]^{2a/3}_{a/3}[/itex]

Any help is appreciated, thank you!