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To add a black square in a LaTeX equation, you can use the \blacksquare command. This will insert a small black square at the current location in the equation.
Yes, you can change the size of the black square by using the \rule command. For example, \rule{1em}{1em} will create a black square that is 1em by 1em in size.
To add line numbers to a LaTeX equation, you can use the \linenumbers command from the lineno package. This will automatically number each line in the equation.
Yes, you can customize the appearance of the line numbers by using the \setrunninglinenumbers and \setdisplayedlinenumbers commands from the lineno package. These commands allow you to specify the type of numbering and the starting number.
Yes, it is possible to add both black squares and line numbers in the same equation in LaTeX. You can use the same techniques mentioned above to add both elements to your equation.
