Returns an array which contains the lower lows values of prices array within a given
period considering a look back period of n days.
- An series where the first element is the closing price in the last
trading period, the second term is the closing price in the previous trading period and so on.
- The number of days before to which the closing price is compared.
A series where the first term is the low calculated for the most recent trading period,
the second term is the low for the previous trading period and so on.
|ArgumentException||Thrown if the series has strictly negative elements
or if the noOfDays argument is greater then the length of prices array.|