Question about Filters in Image Processing

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Rooter Boy
Rooter Boy 2020-11-12
I have three question about this matrix.
I tried to solve for question 6 and 7. But i'm not sure.
I don't have an idea about Question 8.
I tried this code for solving.
A=[14 12 10 12 11 10 13 7 9 16;
16 14 13 13 12 6 9 10 13 11;
16 14 12 13 11 8 9 11 11 3;
13 13 12 12 15 11 12 12 4 3,
16 9 4 12 14 8 9 21 11 5;
16 15 15 12 8 8 5 5 6 12;
12 11 13 11 13 4 4 3 2 5;
7 7 13 13 14 4 4 3 4 5;
8 11 5 12 12 4 5 4 4 5;
14 14 12 6 12 5 2 3 5 3]
......................................................................Question 6
T=medfilt2(A,[3 3]);
T
..................................................................Question 7
A=uint8(A);
H=fspecial('average',[3 3]);
T=imfilter(A,H);
T
.......................................................... Question 8 (it is not working)
A=uint8(A);
H = fspecial('laplacian',0,2)
T=imfilter(A,H);
T
If you help me, i will be very happy.

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