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Please do only e and f and show work null(AT) null(A) T col(A) row(A) Figure 5.6 The four fundamental subspaces (f) Find bases for the four fundamental subspaces8. Given a subspace W of R, define the orthogonal complement of W to be W vE R u v 0 for every u E W (a) Let W span(e, e2) i

null(AT) null(A) T col(A) row(A) Figure 5.6 The four fundamental subspaces (f) Find bases for the four fundamental subspaces of 1 1 1 6 -1 0 1 -1 2 A= -2 3 1 -2 1 4 1 6 1 3
8. Given a subspace W of R", define the orthogonal complement of W to be W vE R u v 0 for every u E W (a) Let W span(e, e2) in R3. Show that e3 is orthogonal sense that W span(e3)? to ei and e2. Does it make (b) Let W be a subspace of R {v1, ... , Vn} in Rm. Let with basis B V1 V2 A = VI the matrix whose rows are the basis vectors of W. i. Verify that row (A) W i. Show that W = (row(A)) null(A) (c) Let A be any m x n matrix. Verify that (col(A)) - null(AT) (d) Use (b) to find W if W = span(v1, V2) where [0 3 and v2 1 2 V1 (e) Let A be an m x n matrix and TA : R"R be the linear transformation defined by A. Remind yourself that ker(TA) = null(A) and range(TA) below depicts the relationship between these objects. Examine this picture and make sure you understand what is going null(AT) the fundamental subspaces corresponding = col(A). The figure on. We call row (A), null(A), col (A), and to A. 1
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Please do only e and f and show work null(AT) null(A) T col(A) row(A) Figure 5.6 The four fundamental subspaces (f) Fin...
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