Question
Compute $a+b, a-3 b$ and $\|4 a+2 b\|$$$a=i-4 j-2 k, b=i-3 j+4 k$$
Step 1
We can do this by adding the corresponding components of vectors $a$ and $b$. $$a+b=(i-4j-2k)+(i-3j+4k)=2i-7j+2k$$ Show more…
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