(1 – $1) r1 S1 (1 – s2) r2 G = S2 (1 – s3) r3 (1 – 84) Ta - S3 Here the variables s; represent matriculation (advancing to the next academic class or graduating) while the variables rị represents the retention of students who did not advance but will return to school in the next year. a) Write the characteristic polynomial for this matrix - but do not expand the polynomial. b) One source of college recruitment is the success of its graduates who then interact with future students. Suppose every graduating student recruits R students for the next freshman class. How does this change the matrix G? c) Write the characteristic polynomial for this new matrix - again do not expand the polynomial. d) If s1 = .6, s2 = .7, s3 = .8, and s4 students must a graduate recruit for the school to sustain or increase its enrollment? [Hint: when is 1 an eigenvalue?] = .85, and ri = .5, r2 = .6, r3 : .9, and r4 = .95, how many
(1 – $1) r1 S1 (1 – s2) r2 G = S2 (1 – s3) r3 (1 – 84) Ta - S3 Here the variables s; represent matriculation (advancing to the next academic class or graduating) while the variables rị represents the retention of students who did not advance but will return to school in the next year. a) Write the characteristic polynomial for this matrix - but do not expand the polynomial. b) One source of college recruitment is the success of its graduates who then interact with future students. Suppose every graduating student recruits R students for the next freshman class. How does this change the matrix G? c) Write the characteristic polynomial for this new matrix - again do not expand the polynomial. d) If s1 = .6, s2 = .7, s3 = .8, and s4 students must a graduate recruit for the school to sustain or increase its enrollment? [Hint: when is 1 an eigenvalue?] = .85, and ri = .5, r2 = .6, r3 : .9, and r4 = .95, how many
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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8. Students normally take 4 years to graduate from college, but occasionally they are delayed in their studies or leave school. If we track freshmen, sophomores, juniors and seniors, their progression through school may resemble
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