<x,y,z>=<2,1,2>+<3,5,2>t<x,y,z>=<2,5,2>+<3,3,2>s1.a1=(3,5,2)a2=(3,3,2)33=35=22
lines are not parallel
2.
A(2,1,2),B(2,5,2)AB=(2−2,5−1,2−2)=(0,4,0)AB⋅a1⋅a2==∣∣033453022∣∣=0⋅5⋅2+4⋅2⋅3+0⋅3⋅3−−0⋅5⋅3−3⋅4⋅2−3⋅2⋅0=24−24=0
lines are intersecting
*If intersecting (type the number 2).
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