1. Find ISCOLLINEAR(A,B)
`A=(0,2)`,`B=(0,4)`,`C=(0,2)`
Solution:
Here `vec A=(0,2),vec B=(0,4),vec C=(0,2)`
Two vectors `vec A` and `vec B` are collinear if there exists a number n such that `vec B = n * vec A`
Find the first nonzero coefficient of vector `vec A`
`A_2=2`
`n=B_2/A_2=4/2=2`
`2 * vec A`
`=2*(A_1,A_2)`
`=(2*A_1,2*A_2)`
`=(2*0,2*2)`
`=(0,4)`
`=vec B`
Since `vec B = 2 * vec A`, so vectors are collinear.
This material is intended as a summary. Use your textbook for detail explanation.
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