Posted by **Putnam** on Tuesday, July 1, 2008 at 2:20pm.

Verify using an example that Vector a • (Vector b • Vector c) = (Vector a • Vector b) • Vector c is not true. Explain your reasoning both numerically and by using the definition of the dot product. I am very confused as to what this means?! Thanks for the assistance.

- Dot Product -
**billy**, Tuesday, July 1, 2008 at 4:13pm
It wants you to substitute values (can be anything as far as I know) for each vector into that equation, then explain based on what you know of the definition of a dot product its properties.

For example:

<2,3> dot (<1,4> dot <3,3> = (<2,3> dot <1,4>) dot <3,3>

Work that out, and the two sides should be different answers. Then explain why that is...I'm guessing due to that multiplication property or something along those lines...

- Dot Product -
**Sick Sick**, Tuesday, July 1, 2008 at 4:19pm
Awesome! Thanks, billy!

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