A = [-1 42 23; 44 -5 3; 2 -5 3] #do not change this line
B = [2 3 1; 4 45 -31; 22 12 10] #do not change this line

function get_module_3_excersise_1_author_name()
    return "YOUR NAME HERE"
end

function problem_1_1()
    C = [] # put result in C
    return C 
end

function problem_1_2()
    C = [] # put result in C
    return C
end


function problem_1_3()
    C = [] # put result in C
    return C
end