Graph y = A·f(Bx − C) + D for any trig function. Adjust amplitude A, frequency B, phase shift C, and vertical shift D. Period and amplitude are computed automatically.
Amplitude = |A| (vertical stretch/compression)
Period = 2π/|B| for sin/cos; π/|B| for tan/cot
Phase shift = C/B (horizontal shift)
Vertical shift = D (midline)
A controls the height of the waves (amplitude). B controls how compressed or stretched the function is horizontally, which changes the period. C shifts the graph left or right (phase shift = C/B). D shifts the entire graph up or down (vertical shift = midline).
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