MATLAB: How to plot a sin wave.

2d plotmatlab function

Hey all how would this be coded?
For a period of 10 seconds and an amplitude of 1 meter, develop a variable that consists of a sine wave of 2 periods where data are determined every tenth of a second.
i have an idea like this 
t = [0:1/10:10];
y = 2*sin(t);
plot (t,a)
But I dont know if that is corrent

Best Answer

Since you want to plot a sine wave of 2 periods in a time of 10 seconds, the time period of sine wave must be 5.
freq = 1/5;
sineWave = sin(2*pi*freq*t);
As amplitude required is 1, you need not multiply the sine wave with any coefficient. Hence, sineWave variable defined above is suffice. You can plot it as
plot(t,sineWave)
Related Question