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Scalar Multiplication of vectors calculator
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 1. `(3,1,1), (-1,2,1)`
2. `(2,3,1), (0,5,6)`
3. `(2,1,-1), (1,0,-1)`
4. `(5,6,1), (0,2,3)`
5. `(5,-1,1), (-2,3,4)`
6. `(1,1,1), (1,2,3)`
7. `(2,3), (7,18)`
8. `(-2,3), (-4,5)`
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Example1. Find -3×A
`A=(3,1,1)`
Solution:
Here `vec A=(3,1,1)`
`-3 * vec A`
`=(-3*A_1,-3*A_2,-3*A_3)`
`=(-3*3,-3*1,-3*1)`
`=(-9,-3,-3)`
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