matrix column, as shown in the annotations of the column headings in Figure 1. y is the chapter number within the specified notebook. It is the same as the row number in the matrix which is to generate the material for the chapter. z is a mini-document number within the chapter (row). This allows for the generation of a
After purchasing a new laptop computer or battery for your laptop, we recommend that the battery be charged for no less than 24-hours. A 24-hour charge makes sure the battery is fully charged and helps with the battery's life expectancy. Once it is fully charged, you should not discharge it fully, if possible. Lithium-ion batteries (the type used in modern laptop computers) are strained, and may be weakened, when they are fully discharged.
In my experience Lithium-Ion batteries as used in most devices like laptops, phones, etc only have a 2 year useful working life. Either continually have the battery being charged or having full charge/discharge cycles seems to be equally bad. I get a new work laptop every 3 years ago - I almost always need a new battery mid-cycle (once I get to less then an hour of charge). It pretty much is the nature of the technology.