Bernoulli Equation with weird integral

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SUMMARY

The discussion centers on solving the Bernoulli equation of the form z' + Pz = Q, specifically addressing the integral involved in the solution process. Participants debate whether the integral can be approached via u-substitution or integration by parts. A critical correction is noted regarding the integral of p(x), clarifying that -∫p(x)dx should yield -x², not x⁻². The conversation emphasizes the importance of recognizing derivatives in the context of integrating the left-hand side by multiplying through by e^(x²).

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TL;DR
Differential equation ending with an integral that doesn't make sense
q2.png


Part of me thinks this is could be a u-sub b/c x^3's derivative is 3x^2, a factor of 3 off from what e is raised to...but it is not a traditional u-sub...any thoughts if this is a u-sub or by parts, and what u should be?I know that there is more to solving the equation after this ( z = e^{1/(x^2)}(c_1+[insert integral from above], y = z^2) but i can't get to that without the integral above.
 
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I presume you're trying to solve
z'+Pz=Q
I think you made a mistake:
-\int p(x)dx=-x^{2} and not what you wrote down which was x^{-2}. you could have cleverly spotted that multiplying throughout by e^{x^{2}} the LHS is a derivative. Integrating the RHS can be written (with the appropriate change of variable (which you can find for yourself)):
\frac{1}{2}\int ue^{u}du
 

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