Show that the substitution v = xy transforms the differential equation
x(d^2y/dx^2)+ 2(1+2x)dy/dx + 4(1+x)y = 32e^(2x) x not equal to 0
into the differential equation
d^2v/dx^2 + 4 dv/dx +4v = 32 e^2x
收錄日期: 2021-04-13 14:25:18
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071111000051KK00155