Meaning that the above formula can generate all solutions for any input function gg (for which 1g21g2 is integrable). Examples (with k=0k=0): g(x)=xg(x)=x, then we obtain f(x)=cx∫1x2dx=−cf(x)=cx∫1x2dx=−c. It is easy to see that f′g−fg′=cf′g−fg′...
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