Question: Example 1.9 shows how to represent the rotation transformation of the plane with respect to the standard basis. Express these other transformations also with respect

Example 1.9 shows how to represent the rotation transformation of the plane with respect to the standard basis. Express these other transformations also with respect to the standard basis.
(a) The dilation map ds, which multiplies all vectors by the same scalar s
(b) The reflection map fℓ, which reflects all vectors across a line ℓ through the origin

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