Exam 4: Subspaces

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If B1, B2 are bases for a given subspace, and A is the change of basis matrix from B1 to B2, then A is invertible, and If B<sub>1</sub>, B<sub>2</sub> are bases for a given subspace, and A is the change of basis matrix from B<sub>1</sub> to B<sub>2</sub>, then A is invertible, and     is the change of basis matrix from B<sub>2</sub> to B<sub>1</sub>. is the change of basis matrix from B2 to B1.

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Find the change of basis matrix from the standard basis to B, and then convert x to the coordinate vector with respect to B. Find the change of basis matrix from the standard basis to B, and then convert x to the coordinate vector with respect to B.

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Find the change of basis matrix from B2 to B1. Find the change of basis matrix from B<sub>2</sub> to B<sub>1</sub>.

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If B1, B2, and B3 are all bases for a given subspace, A is the change of basis matrix from B1 to B2, and B is the change of basis matrix from B2 to B3, then the change of basis matrix from B1 to B3 is given by BA.

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Let Let     for the matrix A. Determine if the vector b is in the kernel of T and if the vector c is in the range of T.  for the matrix A. Determine if the vector b is in the kernel of T and if the vector c is in the range of T. Let     for the matrix A. Determine if the vector b is in the kernel of T and if the vector c is in the range of T.

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Find all values of Find all values of     so that rank      , where   so that rank Find all values of     so that rank      , where   , where Find all values of     so that rank      , where

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By forming matrix rows, find a basis for the given subspace S and give the dimension of S, where By forming matrix rows, find a basis for the given subspace S and give the dimension of S, where

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If If     and      , and      , then      . and If     and      , and      , then      . , and If     and      , and      , then      . , then If     and      , and      , then      . .

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If If   and    , then   . and If   and    , then   . , then If   and    , then   . .

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By forming matrix columns, find a basis for the given subspace S and give the dimension of S, where By forming matrix columns, find a basis for the given subspace S and give the dimension of S, where

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By forming matrix rows, find a basis for the given subspace S and give the dimension of S, where By forming matrix rows, find a basis for the given subspace S and give the dimension of S, where

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Determine if S is a subspace of R2, where S is the subset consisting of all vectors Determine if S is a subspace of R<sup>2</sup>, where S is the subset consisting of all vectors     where      . where Determine if S is a subspace of R<sup>2</sup>, where S is the subset consisting of all vectors     where      . .

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Find the change of basis matrix from B1 to B2. Find the change of basis matrix from B<sub>1</sub> to B<sub>2</sub>.

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Determine if S is a subspace of R, where S is the subset consisting of all vectors Determine if S is a subspace of R, where S is the subset consisting of all vectors     where q is a rational number. where q is a rational number.

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Find bases for the column space of A, the row space of A, and the null space of A. Find bases for the column space of A, the row space of A, and the null space of A.

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If T is an onto linear transformation from R3 to R5, and A is a matrix such that If T is an onto linear transformation from R<sup>3</sup> to R<sup>5</sup>, and A is a matrix such that      , then      . , then If T is an onto linear transformation from R<sup>3</sup> to R<sup>5</sup>, and A is a matrix such that      , then      . .

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Suppose that A is an Suppose that A is an     matrix. If      , and      , what is      ? matrix. If Suppose that A is an     matrix. If      , and      , what is      ? , and Suppose that A is an     matrix. If      , and      , what is      ? , what is Suppose that A is an     matrix. If      , and      , what is      ? ?

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If T is a one-to-one linear transformation from R3 to R5, and A is a matrix such that If T is a one-to-one linear transformation from R<sup>3</sup> to R<sup>5</sup>, and A is a matrix such that      , then      . , then If T is a one-to-one linear transformation from R<sup>3</sup> to R<sup>5</sup>, and A is a matrix such that      , then      . .

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If E is an If E is an     elementary matrix and A is an     matrix, then the subspace spanned by the rows of A is the same as the subspace spanned by the rows of EA. elementary matrix and A is an If E is an     elementary matrix and A is an     matrix, then the subspace spanned by the rows of A is the same as the subspace spanned by the rows of EA. matrix, then the subspace spanned by the rows of A is the same as the subspace spanned by the rows of EA.

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Determine if S is a subspace of R3, where S is the subset consisting of all vectors Determine if S is a subspace of R<sup>3</sup>, where S is the subset consisting of all vectors     where      . where Determine if S is a subspace of R<sup>3</sup>, where S is the subset consisting of all vectors     where      . .

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