In certain physical models, the nonhomogeneous term, or forcing term, g(t) in the equation ay" +by' + cy=g(t) may not be continuous, but have a jump discontinuity. If this occurs, a reasonable solution can still be obtained using the following procedure. Consider the following initial value problem. 100 if 0sts 5x/4 if t> 5π/4 y' +6y' +25y = g(t); y(0) = 0, y'(0) = 0, where g(t) = 0 Complete parts (a) through (c) below. (a) Find a solution to the initial value problem for Osts 5/4. The solution for Osts 5/4 is y(t)=-e-3t(4 cos (4t) + 3 sin (4t))+4. (Type an equation.) (b) Find a general solution for t> 5m/4. The general solution for t> 5x/4 is y(t) = 3 (C₁ cos (4t) + ₂ sin (4t)). (Type an equation. Do not use d, D, e, E, i, or I as arbitrary constants since these letters already have defined meanings.) ... (c) Now choose the constants in the general solution from part (b) so that the solution from part (a) and the solution from part (b) agree, together with their first derivatives, at t=5/4. This gives a piecewise continuously differentiable function that satisfies the differential equation except at t= 5x/4. The solution to the differential equation is y(t) = -e-3t (4 cos (4t)+3 sin (4t))+4 if 0st<5/4 if t> 5x/4

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section: Chapter Questions
Problem 9T
Question
100%
only need the last part in part C please show work if possible ?
In certain physical models, the nonhomogeneous term, or forcing term, g(t) in the equation ay" +by' + cy=g(t) may not be continuous, but have a jump discontinuity. If this occurs, a reasonable
solution can still be obtained using the following procedure. Consider the following initial value problem.
100 if 0st≤5/4
if t> 5π/4
y" + 6y' +25y = g(t); y(0) = 0, y'(0) = 0, where g(t) =
0
Complete parts (a) through (c) below.
(a) Find a solution to the initial value problem for Osts 5x/4.
The solution for Osts 5/4 is y(t)=-e-3t (4 cos (4t) + 3 sin (4t)) + 4.
(Type an equation.)
(b) Find a general solution for t> 5/4.
The general solution for t> 5/4 is y(t) = e-3t (c₁ cos (4t)+c₂ sin (4t)).
(Type an equation. Do not use d, D, e, E, i, or I as arbitrary constants since these letters already have defined meanings.)
(c) Now choose the constants in the general solution from part (b) so that the solution from part (a) and the solution from part (b) agree, together with their first derivatives, at t= 5x/4. This gives a
piecewise continuously differentiable function that satisfies the differential equation except at t= 5/4.
The solution to the differential equation is y(t) = {
-e31 (4 cos (4t) + 3 sin (4t))+ 4
if Ost<5/4
if t> 5π/4
Transcribed Image Text:In certain physical models, the nonhomogeneous term, or forcing term, g(t) in the equation ay" +by' + cy=g(t) may not be continuous, but have a jump discontinuity. If this occurs, a reasonable solution can still be obtained using the following procedure. Consider the following initial value problem. 100 if 0st≤5/4 if t> 5π/4 y" + 6y' +25y = g(t); y(0) = 0, y'(0) = 0, where g(t) = 0 Complete parts (a) through (c) below. (a) Find a solution to the initial value problem for Osts 5x/4. The solution for Osts 5/4 is y(t)=-e-3t (4 cos (4t) + 3 sin (4t)) + 4. (Type an equation.) (b) Find a general solution for t> 5/4. The general solution for t> 5/4 is y(t) = e-3t (c₁ cos (4t)+c₂ sin (4t)). (Type an equation. Do not use d, D, e, E, i, or I as arbitrary constants since these letters already have defined meanings.) (c) Now choose the constants in the general solution from part (b) so that the solution from part (a) and the solution from part (b) agree, together with their first derivatives, at t= 5x/4. This gives a piecewise continuously differentiable function that satisfies the differential equation except at t= 5/4. The solution to the differential equation is y(t) = { -e31 (4 cos (4t) + 3 sin (4t))+ 4 if Ost<5/4 if t> 5π/4
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