matlab

x = 4
A = randi([5, 105], x, x)

p1 = 0
p2 = 0
p3 = 0

for i = 1:x
    for j = 1:x
        if A(i, j) < 25
            p1 = p1+1
            a(1, p1) = A(i, j)
            a(2, p1) = i
            a(3, p1) = j

        elseif A(i, j) > 75
            p2 = p2+1
            b(1, p2) = A(i, j)
            b(2, p2) = i
            b(3, p2) = j

        else
            p3 = p3+1
            c(1, p3) = A(i, j)
            c(2, p3) = i
            c(3, p3) = j
        end
    end
end

figure(1)
plot(a(1,:),'r*')
hold on
plot(b(1,:),'g*')
hold on
plot(c(1,:),'b*')





figure(1)
t = [0:0.1:2*pi]
a = 0.5*sin(t)

plot(t, a)
hold on

figure(1)
c = [0:0.1:2*pi]
d = 1* sin(c)
plot(c,d, 'r')
hold on

figure(1)
x = [0:0.1:2*pi]
y = 2*sin(x)
plot(x,y)
hold on




x = linspace(0, 2*pi)
y = sin(x)
z = cos(x)
hold on

subplot(2, 1, 1)
plot(x, y, 'r')
title('sin x')

legend('y = sin x')
xlabel('x')
ylabel('y')

subplot(2, 1, 2, 'r')
plot(x, z, 'm')
title('cos x')
legend('z = cos x')
xlabel('x')
ylabel('y')




clear all;
a=10;
SNR_A=30;
SNR_B=35;
SNR_C=40;


y1 = 10 ^ (SNR_A/10);
y2 = 10 ^ (SNR_B/10);
y3 = 10 ^ (SNR_C/10);

A = (1:1000)*1000;
B = (2:1000)*1000;
C = (3:1000)*1000;

D = A * log(1 +y1);
E = B * log(1 +y2);
F = C * log(1 +y3);

title('Kapacita prenosneho media')
plot(D);
hold on;
plot(E);
hold on;
plot(F);
legend({'30db', '35db','40db'}, 'location', 'northwest');
xlabel('Sirka pasma B')
ylabel('Kapacita kanala C')