The symbol that looks like "@" in TI-89 output is called the "Sigma" symbol. It is commonly used in mathematics and statistics to represent the sum of a series of numbers.
The "@" symbol is used in TI-89 output to represent a summation. It is typically followed by an expression or equation, and the "@" symbol indicates that all of the terms in the expression should be added together.
No, the "@" symbol is specifically used for summation in TI-89 output and does not have any other functions or meanings. It is important to note that the symbol may be used for different purposes in other contexts or programming languages.
The numbers above and below the "@" symbol in TI-89 output indicate the starting and ending values of the series being summed. For example, if the "@(n=1,10)" is displayed, it means that the series starts at n=1 and ends at n=10.
Yes, there are shortcut keys and commands for using the "@" symbol in TI-89 output. For example, pressing "Ctrl + @" on the keyboard will automatically insert the symbol into your equation. Additionally, the "sum()" command can also be used to represent summation in TI-89 output.