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the scheme is symmetric about the point(xj,tn+o.5),so TE(j,n+0.5)=TE(j,n),how?I can't understand,,,,the scheme is about 1-D parabolic ,you kown the¡£¡£¡£¡£ method£¬ÖмäµÄÊ¡ÂÔºÅÊÇÌ©ÀÕչʾµÄlagrangeÓàÏîµÄÄǸö²ÎÊý£¬·¶Î§ÊÇ0µ½1£¬ÉÏÃæ´ò²»³öÀ´£¬ok£¿
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