Are the following statements true or false? 1. If W = Span{X₁, X2, X3} with {X₁, X2, X3} linearly independent, and if {V₁, V2, V3} is an orthogonal set in W consisting of non-zero vectors, then {V₁, V2, V3} is an orthogonal basis for W. 2. For any scalar c, and vectors u, v ER", we have u. (cv) = c(u. v). 3. If x is not in a subspace W, then x - projw(x) is zero. 4. If y = Z₁ + Z₂, where Z₁ is in a subspace W and Z₂ is in W, then Z₁ must be the orthogonal projection of y onto W. 5. For a square matrix A, vectors in the column space of A are orthogonal to vectors in the nullspace of A.

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Are the following statements true or false?
1. If W = Span{X₁, X2, X3} with {X₁, X2, X3 } linearly independent, and if {V₁, V2, V3 } is an orthogonal set in W consisting of non-zero vectors, then {V₁, V2, V3} is an orthogonal basis for W.
2. For any scalar c, and vectors u, v E R", we have u · (cv) = c(u · v).
3. If x is not in a subspace W, then Xx – projw(x) is zero.
4. If y = Z₁ + Z₂, where Z₁ is in a subspace W and z₂ is in W, then Z₁ must be the orthogonal projection of y onto W.
5. For a square matrix A, vectors in the column space of A are orthogonal to vectors in the nullspace of A.
Transcribed Image Text:Are the following statements true or false? 1. If W = Span{X₁, X2, X3} with {X₁, X2, X3 } linearly independent, and if {V₁, V2, V3 } is an orthogonal set in W consisting of non-zero vectors, then {V₁, V2, V3} is an orthogonal basis for W. 2. For any scalar c, and vectors u, v E R", we have u · (cv) = c(u · v). 3. If x is not in a subspace W, then Xx – projw(x) is zero. 4. If y = Z₁ + Z₂, where Z₁ is in a subspace W and z₂ is in W, then Z₁ must be the orthogonal projection of y onto W. 5. For a square matrix A, vectors in the column space of A are orthogonal to vectors in the nullspace of A.
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