Converting a Second-Order IVP into a System of Equations: Can Substitution Help?

  • #1
karush
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Change the second-order IVP into a system of equations


let

ok I stuck on this substitution stuff
 
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  • #2
Since y'= u, y''= u' so y''+ y'- 2y= u'+ u- 2y= 0 so u'= 2y-u.
 

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