From the above, it can be seen thatPeriod of the graph and y = SiNx y = cosx was 2 π.Period of the graph and y = cosecx y = secx was 2 π.Period of the graph and y = TaNx y = Cotx as π.For periodic functions, which is the maximum and minimum values. We called at the half of the maximum minus minimum of this function that EM พลิจูด (Amplitude) without y function. And SiNx y = cosx have 1 amplitude is equal.
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