If a =i^+j^-k^and b=2i^+2j^+4k^ then the unit vector parallel to a+b is
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Answer:
3i^+3j^+3k^
Explanation:
a=i^ +j^ -k^
b=2i^+2j^+4k^
by adding THESE equations
a+b= 3i^+3j^+3k^
a+b=3(i^+j^+k^)
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