Latex

字母上方波浪线

1.\tilde{...}

2.\widetilde{...}
 
$$\tilde E(w)=\frac{1}{2}\sum_{n=1}^M \{y(x_n,w)-t_n\}^2+\frac{\lambda }{2}||w||^2$$ 

 

 

转载于:https://www.cnblogs.com/AHappyBird/p/9851411.html

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