The operation of typing mathematical symbols is as follows:

Operating equipment: Dell laptop

Operating system: win 10

Operation steps: sogou input method.

1. Switch the input method in the computer to "sogou Input Method" and click "Toolbox" on the far right, as shown in the following figure:

2. In the pop-up dialog box, select "Symbol Daquan" in the upper left corner, as shown in the following figure:

3. Select "Math/Unit" from the leftmost option, and select the required math symbol from the symbols on the right. Click finish input, as shown in the figure below: