【简答题】计算题:求e -at sinωt的拉氏变换。
【单选题】Part 2 task1 Passage2, question1
【单选题】若f(t)的拉氏变换为F(s) ,则eat·f(t)的拉氏变换为( )。
【简答题】中国大学慕课,线性代数,第1章习题。 在作业本上手写题目和答案(答案要有详细的过程),每学一章交一次,拍照上传到这里。
【简答题】Page 63: Exercise B of Dialogue 1 in Part 2 Question 2
【单选题】Part 2 task1 Passage2, question2
A.
They helped him with his studies
C.
They all wanted to make friends with him
【单选题】Adam has been hired by an organization that has a partnership with a foreign company. Both the partners share resources and knowledge while developing new products. Adam's organization has formed a __...
【简答题】For Conversation Press # 1 I’ve got a cell phone, e-mail and voice mail. But why am I so lonely? A funny thing happened on the way to the communications revolution: we stopped talking to one another. ...