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Question
Show that the vectors `2hati - 3hatj + 4hatk` and `-4hati + 6hatj - 8hatk` are collinear.
Solution
Let `veca = 2hati - 3hatj + 4hatk` and `vecb = -4hati + 6hatj - 8hatk`
It is observed that `vec b = -4hati + 6hatj - 8hatk `
`= -2(2hati - 3hatj + 4hatk) `
`= -2veca`
`therefore vec b = lambda vec a`
where,
λ = -2
Hence, the given vectors are collinear.
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