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error in performing waverec2

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FIR on 27 Mar 2013
Closed: MATLAB Answer Bot on 20 Aug 2021
load woman;
[c,s] = wavedec2(X,2,'db1');
ca1 = appcoef2(c,s,'db1',1);
a0 = waverec2(ca1,s,'sym4')
Error: Index exceeds matrix dimensions
i tried to perform waverec2 on ca1.why i get error plz help

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