phymath999
Friday, February 22, 2013
pku 实现任意信号的分解。将函数写成下式:
实现任意信号的分解。将函数写成下式:
能否选择一种合适的基底函数
。
能否很方便地求出系数
c
n
f x
=
c x
+
c x
+
c x
+ +
c x
+
n n
ϕ ϕ ϕ ϕ
Σ
∞
=
=
0
( )
n
n
http://bj3s.pku.edu.cn/activity/subjects/lesson4.pdf
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