Find a + b, 9a + 7b, |a|, and |a - b|.a = 9i - 8j + 7k, b = 7i - 9k

1.	Find a + b, 9a + 7b, \|a\|, and \|a - b\|.a = 9i - 8j + 7k, b = 7i - 9k
Answer» Find a + b, 9a + 7b, \|a\|, and \|a - b\|.a = 9i - 8j + 7k, b = 7i - 9k Solution:

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