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**Question**

If

__a__=

__i__- 2

__j__+ 2

__k__

__b__= 4

__i__- 3

__j__

__M__= 3

__ii__+ 2

__ij__-

__ji__+

__kj__. M is a dyadic.

Determine a[itex]\bullet[/itex]2M[itex]\bullet[/itex]b

## Homework Equations

## The Attempt at a Solution

This isn't really homework, but rather just some self study to help me understand some of my work better. Attached is the answer.

*My real question in this case is some info on how the dot product works? Been trying to find some info about this for 2 days now. If someone could just help explain the dot product between a and 2M, I would be really greatful.*

Thanks