latex公式等号对齐,word公式换行如何让等号对齐

$$begin{aligned}.....内容.....end{aligned}$$

其中，可以使用‘\‘表示换行，在需要对齐的地方使用 ‘&’便可实现对齐！

例子

$$begin{aligned}u cdot n& =u n^T \& = u(A A^{-1})n^T \& =(uA)(A^{-1}n^T) \& =(uA)((A^{-1}n^T)^T)^T \& =(uA)(n(A^{-1})^T)^T \& =uA cdot n(A^{-1})^T \& =uAcdot nB \& =0end{aligned}$$

效果
u ⋅ n = u n T = u ( A A − 1 ) n T = ( u A ) ( A − 1 n T ) = ( u A ) ( ( A − 1 n T ) T ) T = ( u A ) ( n ( A − 1 ) T ) T = u A ⋅ n ( A − 1 ) T = u A ⋅ n B = 0 begin{aligned} u cdot n & =u n^T \ & = u(A A^{-1})n^T \ & =(uA)(A^{-1}n^T) \ & =(uA)((A^{-1}n^T)^T)^T \ & =(uA)(n(A^{-1})^T)^T \ & =uA cdot n(A^{-1})^T \ & =uAcdot nB \ & =0 end{aligned} u⋅n=unT=u(AA−1)nT=(uA)(A−1nT)=(uA)((A−1nT)T)T=(uA)(n(A−1)T)T=uA⋅n(A−1)T=uA⋅nB=0