In this example, the scale is increasing in increments of two. Label the axis as ‘Frequency’. Draw the horizontal axis and number it in regular intervals. In this example, the scale is ...

Sometimes it is clearer to build math models in a spreadsheet. You might think that spreadsheets aren’t built for doing frequency calculation ... Most of these examples will work on any ...

But the math behind it is elegant ... and t is time. Try it. In that example, the frequency is 1 kHz and the amplitude is 20, but you can tweak the values and see what happens.