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The above is the source code of the price-to-book ratio curve formula. You can copy and paste it into the formula editor and then save it. The steps are as follows:

Open the great wisdom software-Formula Management-New-Give the formula a name (upper left corner)-The formula description can be omitted-Paste the above source code into the main window of the formula editor-Save. All right.

Exit the formula editor, enter the formula name in the K-line analysis window, and bring up the formula. (Ask again if you have any questions)

I wish you success.