Are there any results on differential equations of the type $y'(t)+y(g(t))=f(t)$? I am discarding Delay Differential Equations for which a big body of work already exists.
As an example, we could first assume that $g(t)=2t$ above.
Are there any results on differential equations of the type $y'(t)+y(g(t))=f(t)$? I am discarding Delay Differential Equations for which a big body of work already exists.
As an example, we could first assume that $g(t)=2t$ above.
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