Numerical, Derivatives

https://codetown.ru/matlab/chislennoe-differencirovanie/

https://ru.wikipedia.org/wiki/%D0%A7%D0%B8%D1%81%D0%BB%D0%B5%D0%BD%D0%BD%D0%BE%D0%B5_%D0%B4%D0%B8%D1%84%D1%84%D0%B5%D1%80%D0%B5%D0%BD%D1%86%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5

http://qilab.phys.msu.ru/people/zadkov/teaching/seminar1/semnumer1.pdf

http://aco.ifmo.ru/el_books/numerical_methods/lectures/glava1.html

https://kpfu.ru/staff_files/F_1163013414/8_Chislennoe_differencirovanie.pdf

http://qilab.phys.msu.ru/people/zadkov/teaching/seminar1/semnumer1.pdf