返回上页 下页计算 x xxxf 0 0 0 )( 的 傅里叶系数
2
1)(1 0
0

x d xdxxfa 2
1)(1 0
0

x d xdxxfa 2
1)(1 0
0

xdxdxxfa
0
2
0 ]c o ss in[1c o s1c o s)(1

n
nx
n
nxxn x d xxn x d xxfa
n



6,4,2,0
,5,3,1 2)c o s1(1
2
2
n
n
nnn
0
2
0 ]s inc o s[1s in1s in)(1

n
nx
n
nxxn x d xxn x d xxfb
n
nn
n n 1)1(c o s ( n? 1 2)
0
2
0 ]c o ss in[1c o s1c o s)(1

n
nx
n
nxxn x d xxn x d xxfa
n 02
0 ]c o ss in[1c o s1c o s)(1

n
nx
n
nxxn x d xxn x dxfa
n



6,4,2,0
,5,3,1 2)c o s1(1
2
2
n
n
nnn
0
2
0 ]s inc o s[1s in1s in)(1

n
nx
n
nxxn x d xxn x d xxfb
n 02
0 ]s i nc o s[1s i n1s i n)(1

n
nx
n
nxxn x d xxn x d xxfb
n
nn
n n 1)1(c o s ( n? 1 2)
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