课程名称︰信号与系统
课程性质︰大二必修
课程教师︰李琳山、李枝宏、陈宏铭、连豊力
开课学院：电资学院
开课系所︰电机系
考试日期（年月日）︰2015.04.20
考试时限（分钟）：120分钟
试题 :
2015 Signals & Systems Midterm
2015.04.20 09:10-11:10
two-sided A4 is allowed, calculators are not
(the followings are retrieved from my memory,
and therefore may be some minor mistakes.)
1.(15%)
discrete-time, T=10
x(t) = 1 for |t|<=2
0 for 2<|t|<=5
x(t)=x(t+T)
x(t)
|
x x x1 x x
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