⑩天掌 Teaching Plan on Advanced Mathematics o 「Pa+g小+R (Plo(0),w(0), o(Dl()+@lp(0), w(t), o(olw(O +rio(t,y(, a(tla(t)jdt tianjin polytechnic dmivendityTianjin Polytechnic University Teaching Plan on Advanced Mathematics R t t t t dt P t t t t Q t t t t Pdx Qdy Rdz [ ( ), ( ), ( )] ( )} { [ ( ), ( ), ( )] ( ) [ ( ), ( ), ( )] ( )               +  =  +  + +  