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Through a program which draws graphs (ex. derive), I was asked to investigate the graphs of the form y = a cos x + b sin x.
This is an open question. So I would like help on what could I investigate.
I know a cos x + b sin x = R cos (x - alpha) but I need more help pleasseee such as in investigating amplitudes, periods etc. (I guess).
Thankx! Ramona
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