3-28. (a) Let In be the n x n identity matrix. What is det(-2In)? (b) If A is an n× n matrix and c € R is a realy number, formulate a hypothesis for det (CA) in terms of c and det(A).
3-28. (a) Let In be the n x n identity matrix. What is det(-2In)? (b) If A is an n× n matrix and c € R is a realy number, formulate a hypothesis for det (CA) in terms of c and det(A).
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:3-28. (a) Let In be the n × n identity matrix. What is det(-2In)?
(b) If A is an n x n matrix and c E R is a realy number, formulate a hypothesis for det (CA)
in terms of c and det(A).
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