how to imput a matrix end outpur four arguments

How can i create a function that has an imput a matrix arguments and in outputs four arguments, the corner's matrix

Answer 1

[Thiago Henrique Gomes Lobato]

The main function creation in matlab has the following form:

function output = FuncName(input)

output = f(input)
end

Input can be a matrix, and, in your case, the function is to get the corners, which can be done with simple index. So:

function output = FuncName(input)
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output = [input(1,1), input(1, end); input(end, 1),input(end,end)   ];
end