反演原理

已知: f(n)=∑i=0nani⋅g(i) f ( n ) = ∑ i = 0 n a n i ⋅ g ( i ) web 即: ⎧⎩⎨⎪⎪⎪⎪⎪⎪f(0)=a00⋅g(0)f(1)=a10⋅g(0)+a11⋅g(1)⋯f(n)=an0⋅g(0)+an1⋅g(1)+⋯+ann⋅g(n) { f ( 0 ) = a 00 ⋅ g ( 0 ) f ( 1 ) = a 10 ⋅ g ( 0 ) + a

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