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tybtookie
05.09.2019 •
Mathematics
Find the general solution of y''' + 6y'' + y' − 34y = 0 if it is known that y1 = e−4x cos(x) is one solution.
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Ответ:
Step-by-step explanation:
Given is a differential equation of III order,
The characteristic equation would be cubic as
By trial and error, we find that
Thus m=2 is one solution
Since given that
is one solution we get
m = -4+i and hence other root is conjugate![m=-4-i](/tpl/images/0223/3067/42a9e.png)
Hence general solution would be
Ответ:
Kates: 158x$23=$3634
Jones: 123x$83=$10209
Hope this helped!