Question about Filter codes

Question: Below is the matrix of a 10x10 image. Using a 3x3 kernel, apply the mean, median, laplas (4-neighborhood absolute result) and sobel operators (x-y direction together) to the relevant pixel of the image using the i and j indices given in the table next to your name.

Average:

Median:

Laplace:

Sobel:

I need Matlab codes that find the results above. For example:T=medfilt2(A,[3 3]); for Median.

My tried codes:

For example, I have a matrix of any picture.

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]

T=medfilt2(A,[3 3]);

T(5,5) % The answer is 12

A=uint8(A);

H=fspecial('average',[3 3]);

T=imfilter(A,H);

T(3,3) % The answer is 13

A=uint8(A);

H = fspecial('laplacian',0.2)

T=imfilter(A,H);

I don't know sobel code how to use for this question.