In Problems 11-14 verify that the indicated function is an explicit solution of the given differential equation. Assume an appropriate interval I of definition for each solution. 11. 2y' + y = 0; y= e-x/2

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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In Problems 11-14 verify that the indicated function is an
explicit solution of the given differential equation. Assume
an appropriate interval I of definition for each solution.
11. 2y' + y = 0; y= e-x/2
dy
-20
12.
+ 20y = 24; y =
%3D
-
dt
13. y" – 6y' + 13y = 0; y = e* cos 2x
14. y" + y = tan x; y = -(cos x)ln(sec x + tan x)
419
619
Transcribed Image Text:In Problems 11-14 verify that the indicated function is an explicit solution of the given differential equation. Assume an appropriate interval I of definition for each solution. 11. 2y' + y = 0; y= e-x/2 dy -20 12. + 20y = 24; y = %3D - dt 13. y" – 6y' + 13y = 0; y = e* cos 2x 14. y" + y = tan x; y = -(cos x)ln(sec x + tan x) 419 619
In Problems 9 and 10 determine whether the given first-order
differential equation is linear in the indicated dependent
variable by matching it with the first differential equation
given in (7).
9. (y2 – 1) dx + x dy = 0; in y; in x
%3D
10. u dv + (v + uv – ue") du = 0; in v; in u
Transcribed Image Text:In Problems 9 and 10 determine whether the given first-order differential equation is linear in the indicated dependent variable by matching it with the first differential equation given in (7). 9. (y2 – 1) dx + x dy = 0; in y; in x %3D 10. u dv + (v + uv – ue") du = 0; in v; in u
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