a) Prove that if linear transformation T: U → V and S: V → W, then the composition (S.T) : U -> W is also a linear transformation.
a) Prove that if linear transformation T: U → V and S: V → W, then the composition (S.T) : U -> W is also a linear transformation.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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
Transcribed Image Text:a) Prove that if linear transformation T: U → V and S : V → W,
then the composition (S.T): U -> W is also a linear transformation.
b) Find the matrix transformation R2 • R,• 2 Id : R2 → R2 which is a
`y
composition of 2•ld – scales a vector in R2 by a factor of 2, R, reflects a
vector about the y-axis and R12 – rotates a vector by angle T/2 in a
counter clockwise direction.
c) Prove that if T is an injective linear transformation i.e T : U –→ V is
linear, then dim U (dimensions U) is less than or equal to dim V
(dimensions V).
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