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Let A=3i-j-4k,B=-2i+4j-3k and C=i+2j-k compute 2A-B+3C​
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Let A=3i-j-4k,B=-2i+4j-3k and C=i+2j-k compute 2A-B+3C​

User Grigorash Vasilij
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1 Answer

4 votes

A = 3i - j - 4k

B = -2i + 4j - 3k

C = i + 2j - k

2A - B + 3C =

= 2(3i - j - 4k) - (-2i + 4j - 3k) + 3(i + 2j - k) =

= 6i - 2j - 8k + 2i - 4j + 3k + 3i + 6j - 3k =

= 6i + 2i + 3i - 2j - 4j + 6j - 8k + 3k - 3k =

= 11i - 8k

User Abdelrhman Adel
by
4.9k points
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