Review ·矢量分解() F=mF)-n×(n×F)=F,n+F,i ·矢量分解（仙） (V,×A,)n+(V,×A),+(n×A),+(Vn×A,)=E+n lexu@mail.xidian.edu.cnReview  矢量分解(I)  矢量分解(II) lexu@mail.xidian.edu.cn 3 ˆˆˆˆˆ () ( ) ˆ F n n F n n F F n Ft = ⋅ −× × = + n t   ( )( )( )( ) ∇× +∇× +∇ × +∇ × = + t tn t nt n tt n n t n A A A A FF     XIDIAN UNIVERSITY LEXU@MAIL.XIDIAN.EDU.CN