Intro to Sinusoids


Here is a typical sinusoid:


The most general mathematical formula for a sinusoid is \(x(t)=A \cos(2 \pi f_0 t + \phi)\)
The goal of this demo is to learn how to sketch a sinusoid given its formula and to write the formula of a sinusoid given its plot.


Here is a quick tutorial on how to sketch a plot from an equation, and here is a tutorial on going the other way.


Here is how to plot sines in MATLAB.

Sine Drill

This will take you to MATLAB GUI (graphical user interface) that tests your ability to go from plots of cosine waves to equations.