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Integration by Parts: Example 6: Trigonometry

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mes4.4 K5 years agoSteemit2 min read

In this video I go over another example on integration by parts and proof the reduction formula for integrating sinn(x) where n is any integer greater than or equal to 2.


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Integration by Parts: Example 6

https://cdn.steemitimages.com/DQmc2SNpWf6PP1jpww1TxboA9qshdyMWAdVSbFJCbrEmbnZ/Integration%20by%20Parts%20Example%206.jpeg

Example: Prove the reduction formula:

https://cdn.steemitimages.com/DQmcagC94C4j7Q8niq1poH8JsMuLxzDS6iRF6NHLmgVrcHf/image.png

Solution:

Note: This equation is called a reduction formula because the exponent n has been reduced to n - 1 and n - 2.

https://cdn.steemitimages.com/DQmShwnk5mjbFGzYaAeKbZzR63Ld88i4CxKdPwVatDqcFaU/image.png

https://cdn.steemitimages.com/DQmVwkKGjxaSk2pRCvTAMKFu1rKSRkmHxgQ3dq9zSw1eVNz/image.png

The reduction formula is useful because we could eventually express:

https://cdn.steemitimages.com/DQmUf1ve7xum9Tzd6qYC4MvZh6wG6nJugf8MQwKAxekbBe8/image.png

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