Sij = { 1 0 patient i exhibits symptom j patient i does not exhibit symptom j
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:Patients and symptoms. Each of a set of N patients can exhibit any number of a set of n symptoms. We
express this as an N x n matrix S, with:
Sij
-
{}
0 patient i does not exhibit symptom j.
1 patient i exhibits symptom j
Give simple English descriptions of the following expressions. Include the dimensions, and describe the
entries.
a) S1
b) ST1
c) STS
d) SST
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