2. Example-2
1. Find 3×A
`A=(5,-1,1)`
Solution:
Here `vec A=(5,-1,1),vec B=(-2,3,4),vec C=(5,-1,1)`
`3 * vec A`
`=3*(A_1,A_2,A_3)`
`=(3*A_1,3*A_2,3*A_3)`
`=(3*5,3*(-1),3*1)`
`=(15,-3,3)`
2. Find 2×B
`B=(-2,3,4)`
Solution:
Here `vec A=(5,-1,1),vec B=(-2,3,4),vec C=(5,-1,1)`
`2 * vec B`
`=2*(B_1,B_2,B_3)`
`=(2*B_1,2*B_2,2*B_3)`
`=(2*(-2),2*3,2*4)`
`=(-4,6,8)`
This material is intended as a summary. Use your textbook for detail explanation.
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