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by | Dec 22, 2013 | Publications. VIX is a measure of expected volatility calculated as 100 times the square root of the expected 30-day variance (var) of the S&P 500 rate of return. The variance is annualized and VIX expresses volatility in percentage points.
Vertical Asymptotes: where n is an integer. Use the form to find the variables used to find the amplitude, period, phase shift, and vertical shift. Since the graph of the function does not have a maximum or minimum value, there can be no value for the amplitude. Find the period using the formula . The period of the function can be calculated using .