# Don't be phased

What is the amplitude and phase for each of the frequency terms in the function below?:

y(t)=4*cos(7*pi*t+0.3)+2*cos(3.2*pi*t-0.5).

Choosing a suitable sampling interval and range of values for t, check that the Frequency spectrum, displaying amplitude and phase, gives the expected result.

#amplitude #phase #trigonometricfunctions #frequencyanalysis #dsp

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Google Play and the Google Play logo are trademarks of Google LLC.

Versions will shortly be available for iOS and Windows.

plotXpose app is a companion to the book Mathematics for Electrical Engineering and Computing by Mary Attenborough, published by Newnes, 2003.