clc
clear
Z=zeros(5,181);
for i=1:181
    x=i-1;
    Z(1,i) = x;
// A
    if x>= 0 & x <= 40 then
        uA = (40 - x) / (40 - 0);
        else uA = 0
    end
    Z(2,i) = uA;
// B
    if x>= 20 & x <= 40
        uA = (x - 20) / (40 - 20);
    elseif x >= 40 & x <= 60
        uA = 1;
    elseif x >= 60 & x <= 90
        uA = (90 - x) / (90 - 60);
    else
         uA = 0;
    end
    Z(3,i) = uA;
// C
    if x >= 70 & x <= 100
        uA = (x - 70 ) / (100 - 70);
    elseif x >= 100 & x <= 130
        uA = (130 - x) / (130 - 100);
    else
        uA = 0
    end
    Z(4,i) = uA;
// D
    if x >= 110 & x <= 140
        uA = (x - 110) / (140 - 110);
    elseif x >= 140 & x <= 180
        uA = 1;
    elseif x >= 180 & x <= 180
        uA = (180 - x) / (180 - 180);
    else
         uA = 0;
    end
    Z(5,i) = uA;


end

plot(Z(1,:), Z(2,:));
plot(Z(1,:), Z(3,:));
plot(Z(1,:), Z(4,:));
plot(Z(1,:), Z(5,:));
mtlb_axis([0 180 0 1.2])