Elementary Linear Algebra (MindTap Course List)
Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN: 9781305658004
Author: Ron Larson
Publisher: Cengage Learning
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Transcribed Image Text:Problem 10. Let T : P3 → ×ばつ2 be the function defined by
T(p) = [p(0) - p(1) ''(2)] .
(a) Prove that T is a linear transformation.
(b) Find the image of T.
(c) Find the kernel of T.
Rank-nullity theorem
p(0)+p(1)
Problem 11. In the exercises of the previous subsection, whenever you had computed one of the kernel/image
of the transformation, could you have guessed the dimension of the other?
Problem 12. Find all the surjective linear transformations from R3 to R4.
Problem 13. Let V, W be finite-dimensional vector spaces. Prove that there exists an injective linear trans-
formation L: VW dim(V) ≤ dim(W).
Transcribed Image Text:Problem 5. (a) Consider a reflection R through the line y = x in R2. Find a basis of R2 for which it is easy
to describe how R transforms the vectors inside it. Express R as a matrix transformation.
(b) Consider a projection P on the line
and
固
У
=
2x in R2. Draw a picture of the line together with the vectors
Describe how P transforms the two vectors. Can you express P as a matrix transformation?
Problem 6. Let R denote a counterclockwise rotation by an angle of 0 in R2. Express R as a matrix transfor-
mation.
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