MATLAB: Sampling sawtooth sequence at high rate

MATLABsampling rate

why matlab give error fs = 10000 n=0:10000 t = 0:1/fs:1.5; x1 = sawtooth(2*pi*50*t); subplot(2,1,1) stem(n,x1) axis([0 0.1 -1.2 1.2])

fs = 10000 
t = 0:1/fs:1.5; 
x1 = sawtooth(2*pi*50.*t); 
subplot(2,1,1) 
stem(x1) 
xlim([1 200])

T = 10*(1/50); 
Fs = 1000; 
dt = 1/Fs; 
t = 0:dt:T-dt;
x = sawtooth(2*pi*50*t);
plot(t,x)
xlim([0 0.2])
ylim([-1 1])
grid on

You are very close.

Try this:

f = @(x) rem(x+3,2)-1
figure
fplot(f, [-3,3])

It offsets the ‘x’ value, subtracts 1 so the limits are appropriate, then does the plot.

It may not be universally applicable, for all ‘x’. It works here for this particular problem.