SUM = Summation notation RET DEV = Actual returns deviation over selected period N = Number of points for the period More Info All Equity Analysis ZTO Express Variance Peers Comparison 0.626.000.610.001.002.003.004.005.006.00LDowJonesZTOExpressAquagoldThriventMorningstar...
The next step is to "release" the first two terms of the infinite series from the sigma notation chunk, with B0=1B0=1 and B1=−12B1=−12, the first two terms are 11 and −x−x1+1x(1−x+∑n=2+∞Bn(2x)nn!)=1+1x−1+1x(1−x+∑n=2+∞Bn(2x)nn!)=1x+1x...