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Hey i need help with this question and i dont know wat to do after finding the normal vector of vectors a and s. And the normal vectors of vector t and b. Can someone help me please?

the normal of s and a is (2,1,-3). and the normal of t and b is (-2,-1,3). is this right?

Construct two parallel planes. The first plane contains L1: r=(0,2,1) + s(2,-1,1) and an intersecting line that has a direction vector of a(1,-2,0). The second plane contains

L2: r=(1,0,1) + t(1,-2,0) and an intersecting line that has a direction vector of b(2,-1,1)

the normal of s and a is (2,1,-3). and the normal of t and b is (-2,-1,3). is this right?

Construct two parallel planes. The first plane contains L1: r=(0,2,1) + s(2,-1,1) and an intersecting line that has a direction vector of a(1,-2,0). The second plane contains

L2: r=(1,0,1) + t(1,-2,0) and an intersecting line that has a direction vector of b(2,-1,1)

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