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Find the scalar and vector products of t...

Find the scalar and vector products of two vectors. `a = (3hati – 4hatj + 5hatk) and b = (– 2hati + hatj – 3hatk )`

Text Solution

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`a.b=(3hati-4hatj+5hatk).(-2hati+hatj-3hatk)`
`=-6-4-15`
`=-25`
`axxb=|(hati,hatj,hatk),(3,-4,5),(-2,1,-3)|=7hati-hatj-5hatk`
Note `bxxa=-7hati+hatj+5hatk`
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