Consider the initial value problem y" + (1/3)y' + 4y = fk(t), y(0) = y'(0) = 0,

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter11: Differential Equations
Section11.CR: Chapter 11 Review
Problem 15CR
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(6) Consider the initial value problem
y" + (1/3)y' + 4y = fk(t),y(0) = y′(0) = 0,
Transcribed Image Text:(6) Consider the initial value problem y" + (1/3)y' + 4y = fk(t),y(0) = y′(0) = 0,
where
fk(t) =
1/2k, 4-k≤t≤4+k
0, 0≤ t ≤4-k,t≥4+k*
(a) Sketch the graph of f(t). Show that the area under the graph of få is independent from
k.
(b) Write f(t) using Heaviside functions. Solve the differential equation.
(c) Using a computer, plot the solutionsfor k = 2,1/2. Describe how the solution depends
on k.
Transcribed Image Text:where fk(t) = 1/2k, 4-k≤t≤4+k 0, 0≤ t ≤4-k,t≥4+k* (a) Sketch the graph of f(t). Show that the area under the graph of få is independent from k. (b) Write f(t) using Heaviside functions. Solve the differential equation. (c) Using a computer, plot the solutionsfor k = 2,1/2. Describe how the solution depends on k.
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