This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
KrzyweCakowe.svg en Some integral curves that meet differential equation f' frac f' frac wyznaczone przy pomocy metody Eulera own coma Plik KrzyweCakowe Differential equations
Page 2023 Free-images.com. All images are Public Domain