# Matrix Representation of a linear transformation Similarity Application: Computer Graphics __see att

Matrix Representation of a linear transformation

Similarity

Application: Computer Graphics

__see attachment__

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Matrix Representation of a Linear Transformation

T: Rn ? Rn is a linear operator

Find the matrix representation for T relative to the standard basis for Rn

Find T(v), using a direct computation and using the matrix representation.

T: R3R3

T =

v =

T: V ? V is a linear operator with B and B’ ordered bases for V

Find the matrix representation for T relative to the ordered bases B and B’

Find T(v), using a direct computation and using the matrix representation.

T: R3R3

T =

B =

B’ =

v =

Find

Let T: R2 ? R3 be the linear transformation defined by

T =

Let B and B’ be ordered bases for R2 and B” the ordered basis for R3 defined by

B =

B’ =

B” =

Find the matrix representation for the given linear operator relative to the standard basis.

Compute the image of v = directly and using the matrix found in part (a).

Let S, T: R2R2 be defined by

T = andS =

Similarity

A linear operator T and bases B1 and B2 are given.

Find [T]B1 and [T]B2

Verify that the action on v of the linear operator T is the same when using the matrix representation of T relative to the bases B1 and B2

T =

B1 =

B2 =

v =

[T]B1 and [T]B2 are, respectively, the matrix representations of a linear operator relative to the bases B1 and B2. Find the transition matrix P = and show directly that the matrices are similar.

[T]B1 = [T]B2 =

B1 =

B2 =

Find the matrix representation of the linear operator T relative to B1. Then find [T]B2

T =

B1 =

B2 =

Application: Computer Graphics

Let T: R2 ? R2 be the transformation that performs a reflection through the y-axis, followed by a horizontal shear by a factor of 3.

Find the matrix of T relative to the standard basis.

Let T: R2 ? R2 be the transformation that performs a reflection through the line y = x, followed by a rotation of 90 degrees.

Find the matrix of T relative to the standard basis.

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