Mathtype steps for writing piecewise functions

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Open the mathtype formula editor and type the left bracket. Click the mouse on Fence Templates in the upper toolbar and select the left bracket.

Insert matrix (in matrix template). For example, if your piecewise function has two branches, the inserted matrix should be selected as a 2×2 matrix. If the piecewise function has three branches, the inserted matrix should be selected as a 3×2 matrix, and so on. After inserting the matrix, enter the function expression in the first column, and the second column is the corresponding partial interval.

For example, insert the piecewise function as shown in the figure:

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