
References
^ William E. Boyce (Rensselaer Polytechnic Institute); Richard C. DiPrima (2014). Elementary Differential Equations, 9th Edition, Wiley. BiggerBooks. ISBN 9780470039403 (revised Oct 2023)^ (2013). Elementary Differential Equations, 9th Edition ECampus. ISBN 9780470039403 (revised Apr 2015)
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