Prove that H is a subring with unity of M2x2(ℤ), under the usual matrix addition and matrix multiplication.

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Chapter3: Functions
Section3.3: Rates Of Change And Behavior Of Graphs
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Prove that H is a subring with unity of M2x2(ℤ), under the usual matrix addition and matrix multiplication.

Consider H = {[x]x, y ≤ Z}
and the mapping of f: H → Z
given that f(x)
= x - y.
Transcribed Image Text:Consider H = {[x]x, y ≤ Z} and the mapping of f: H → Z given that f(x) = x - y.
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