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7.8 Sinusoidal Graphs
Graph of y = sinx Period = 2 Amplitude = max – min = 1 – – 1 = 1 2 x y 1 –1
General Sine Curve If a is (+), typical sine curve If a is (–), reflect through x-axis We’ll do c & d tomorrow
Ex 1) Graph y = 3sinx b c a d Amp = 3 Period = 2 Increment length = 1 = 0 = 3 = 0 3 –3
Ex 2) Graph y = sin2x b c a d Amp = 1 Per: IL: = 2 = 0 = 1 = 0 1 –1
Graph of y = cosx Period = 2 Amplitude = max – min = 1 – – 1 = 1 2 x y 1 –1
General Cosine Curve If a is (+), typical cosine curve If a is (–), reflect through x-axis We’ll do c & d tomorrow
Ex 3) Graph b c a d Amp = 2 Per: IL: = = 0 = –2 = 0 2 –2 a = –2 reflect across x-axis
Homework #720 Pg – 4 all, 13 – 20 all
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