# Help me integrate high school level

• Nov 13th 2010, 09:42 PM
Zoognoogle
Help me integrate high school level
Hey guys got a little stuck trying to anti differentiate this one

y=2sin((2pi/20)*x)

Thanks for any help :)
• Nov 13th 2010, 09:47 PM
Educated
Where did you get stuck? Can you show us some of your working?

For starters, use integration by u-substitution.

Let $\displaystyle u = \dfrac{\pi x}{10}$ and carry on from there.
• Nov 13th 2010, 09:54 PM
Hardwork
Or use $\displaystyle \int \sin(ax)\; dx = -\frac{1}{a}\cos(ax)+c$.
• Nov 14th 2010, 12:21 AM
Zoognoogle
Well.. Any chance of a step by step process please? That would be REALLY helpful. Thanks heaps
• Nov 14th 2010, 12:47 AM
mr fantastic
Quote:

Originally Posted by Zoognoogle
Well.. Any chance of a step by step process please? That would be REALLY helpful. Thanks heaps

You have been told exactly how to do it. There is nothing more to be said. If you need more help, please show what you have tried and say exactly where you are still stuck.