SOLUTION: Given vectors a=3i - 2j and b=4i + 4j. Find 5a - 3b.

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Question 70741: Given vectors a=3i - 2j and b=4i + 4j. Find 5a - 3b.
Answer by venugopalramana(3286) About Me  (Show Source):
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Given vectors a=3i - 2j and b=4i + 4j. Find 5a - 3b.
MULTIPLY AND ADD I COMPONENTS AND J COMPONENTS SEPARATELY.
5A =15I-10J
3B=12I+12J
5A-3B=I(15-12)+J(-10-12)= 3I-22J