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.
A laptop computer battery should last between two and four years, or around 1,000 full charges. The total lifetime of battery life is dependent on the type of battery your laptop has, how you use the battery, how it's charge, and how well you take care of the battery. 1  Tips and help with maximizing your laptop battery life.