A mapping T: R2 R2 is given by Where Show that T rotates every vector v ε

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A mapping T: R2 †’ R2 is given by
Where
A mapping T: R2 †’ R2 is given by 
Where
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Show that T rotates every vector v ε R2 counterclockwise about the origin through angle 0. Express v using polar coordinates,

A mapping T: R2 †’ R2 is given by 
Where
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And use the identities for cos(θ + α) and sin(θ + α).

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Differential Equations and Linear Algebra

ISBN: 978-0131860612

2nd edition

Authors: Jerry Farlow, James E. Hall, Jean Marie McDill, Beverly H. West

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