[理工] [工數]-偏微

[shareing ( )]

試解

x(du/dx)+du/dt+tu = 0

u(x,0) = sinx

請板上高手幫忙一下

感謝~

--
※ 發信站: 批踢踢實業坊(ptt.cc) 
◆ From: 140.115.204.13
推 honestonly:Lagrange??