When this is the case, the analytical solution does not exist and it should be replaced by a weak solution consists of a discontinuity (i.e., a shock).
When this is the case, the analytical solution does not exist and it should be replaced by a weak solution consists of a discontinuity (i.e., a shock).
小时候，我妈说：“什么东西都要自己有了才是真的。”现在越来越觉着这一句话的真实性了！