摘要:
(Newton 1671, “Problema II, Solutio particulare”). Solve the total differential equation $$3x^2-2ax+ay-3y^2y'+axy'=0.$$Solve:We have $$y'(3y^2-ax)=3x^... 阅读全文
摘要:
Solve equation $y'=1-3x+y+x^2+xy$ with another initial value $y(0)=1$.Solve: We solve this by using Newton's extraordinary method.We assume that the s... 阅读全文