Find a general solution of the given differential equation. d²y dy 2-+ y = e'tan-1t dt2 dt

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter11: Topics From Analytic Geometry
Section11.4: Plane Curves And Parametric Equations
Problem 33E
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Question
Find a general solution of the given
differential equation.
d²y
dy
- 2 +y= e'tan-1t
dt2
dt
Transcribed Image Text:Find a general solution of the given differential equation. d²y dy - 2 +y= e'tan-1t dt2 dt
Expert Solution
Step 1

Given differential equation is

 d2ydt2-2dydt+y=ettan-1t

Associated homogeneous differential equation is

d2ydt2-2dydt+y=0

Auxiliary equation is

 m2-2m+1=0

m-12=0

m=1,1

Roots of auxiliary are real and repeated.

So, the complementary solution is

 yc=c1et+c2tet   where c1 and c2 are arbitrary constants.

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