1b

close all;
clear all;

A=230;
f=50;
t=1;
fs1=10000;
% fs2=51;
% fs3=50;
% fs4=49;

fs2=26;
fs3=25;
fs4=24;

counter=1;

w=2*pi*f;



for i=0:1/fs1:t
    x1(counter)=i;
    y1(counter)=sin(w*i);
    counter=counter+1;
end

counter=1;

for i=0:1/fs2:t
    x2(counter)=i;
    y2(counter)=sin(w*i);
    counter=counter+1;
end

counter=1;

for i=0:1/fs3:t
    x3(counter)=i;
    y3(counter)=sin(w*i);
    counter=counter+1;
end

counter=1;

for i=0:1/fs4:t
    x4(counter)=i;
    y4(counter)=sin(w*i);
    counter=counter+1;
end


hold on
plot(x1,A*y1,'b-')
xlabel('second')
ylabel('Volt')
plot(x2,A*y2,'g-o')
plot(x3,A*y3,'r-o')
plot(x4,A*y4,'k-o')