题目内容
Laplace变换对是求解高阶常系数线性微分方程的有力工具。
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线性常微分方程的解通常是由两部分组成：通解+特解。通解常常根据初始条件求得。
根据上面视频内容在横线上填上正确的单词。Acourtyard residence, sì hé yuàn , is a yard enclosed by houses in four 1 .It is a closed residence with only one gate leading to the outside.
Houses on the north are the largest ones andused as the2 bedrooms.
Houses on the twoflanksare the residencesof their3 .The arrangement representsthehierarchyina family.
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