6. Following the directions below, use Laplace transforms to solve the following initial value problem. y" + y' – 12y = -218(t – 5), y(0) = = 0, y'(0) = 21 (a) Show that when one transforms the given initial value problem into an algebraic equation involving L{y} = Y(s), one obtains 21 -21 te-5s 3) Y(s) = (s + 4)(s – (s+4)(s – 3) (b) Use the expression for Y(s) given in part (a) to solve for y(t), the solution of the initial value problem.

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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6. Following the directions below, use Laplace transforms to solve the following initial value problem.
y" + y' – 12y = -218(t – 5),
y(0) = 0, y'(0) = 21
(a) Show that when one transforms the given initial value problem into an algebraic equation involving
L{y} = Y(s), one obtains
21
-21
Y(s) =
te-5s
(s + 4)(s – 3)
(s+4)(s – 3)
(b) Use the expression for Y(s) given in part (a) to solve for y(t), the solution of the initial value
problem.
Transcribed Image Text:6. Following the directions below, use Laplace transforms to solve the following initial value problem. y" + y' – 12y = -218(t – 5), y(0) = 0, y'(0) = 21 (a) Show that when one transforms the given initial value problem into an algebraic equation involving L{y} = Y(s), one obtains 21 -21 Y(s) = te-5s (s + 4)(s – 3) (s+4)(s – 3) (b) Use the expression for Y(s) given in part (a) to solve for y(t), the solution of the initial value problem.
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