§3.3非齐次边界条件的处理 定解条件 L.-a2u=0<1 =0 g() ==h(t 2 l=0=0(x) l=0=v(x)(〈3§3.3 非齐次边界条件的处理 一、定解条件 ï ï ï î ï ï ï í ì = = = = - = = = = = | ( ) | ( ) | ( ) | ( ) 0 0 0 0 2 u x u x u h t u g t u a u t t t x l x tt xx y j <1> <2> <3>