SOLUTION: Show that if s=(v1,v2,v3) is a linearly dependent set of vectors in a vector space V, and v4 is any vector in V that is not in S, then {v1,v2,v3,v4} is also linearly dependent

Algebra ->  College  -> Linear Algebra -> SOLUTION: Show that if s=(v1,v2,v3) is a linearly dependent set of vectors in a vector space V, and v4 is any vector in V that is not in S, then {v1,v2,v3,v4} is also linearly dependent       Log On


   



Question 460760: Show that if s=(v1,v2,v3) is a linearly dependent set of vectors in a vector space V, and v4 is any vector in V that is not in S, then {v1,v2,v3,v4} is also linearly dependent
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
Let S = { v%5B1%5D, v%5B2%5D, v%5B3%5D } be a linearly dependent set of vectors in V.
This means that there are scalars c%5B1%5D, c%5B2%5D, and c%5B3%5D, not all of them zero, such that c%5B1%5D%2Av%5B1%5D+%2B+c%5B2%5D%2Av%5B2%5D+%2B+c%5B3%5D%2Av%5B3%5D+=+theta. But then, we would also have c%5B1%5D%2Av%5B1%5D+%2B+c%5B2%5D%2Av%5B2%5D+%2B+c%5B3%5D%2Av%5B3%5D+%2B+0%2Av%5B4%5D+=+theta, letting c%5B4%5D+=+0; and not all of c%5B1%5D, c%5B2%5D, c%5B3%5D, and c%5B4%5D are equal to zero. Hence { v%5B1%5D, v%5B2%5D, v%5B3%5D , v%5B4%5D } is also a linearly dependent set.