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: