Question

the magnitude of vector 4i+2j+4k is
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Answer 1

Answer:

The magnitude of vector is |4i+2j+4k|=√(4^2+2^2+4^2). 【 here i^2=j^2=k^2=1; because these are unit vectors】

=√(16+4+16)

=√(36)

=√(6×6)

=6

The answer you need is 6.