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Find a · b. a = 5i + 4j − k, b = −4i + 9k

Find a · b. a = 5i + 4j − k, b = −4i + 9k
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Find a · b.
a = 5i + 4j − k, b = −4i + 9k

User Dhblah
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a · b= the square root of b(5i + 4j - k) divided by b

User Mklein
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