Question: Evaluate the dot product A B A B . Part A A = 4 i ^ + j ^ A = 4 i ^ +

Evaluate the dot product A

.

Part A

= 4

^+

^

= 4

^+

^

and B

=

^+ 4

^

=

^+ 4

^.

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=

nothing

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Answer

Part B

= 4

^8

^

= 4

^8

^

and B

= 2

^

^

= 2

^

^.

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