User talk:138.19.10.104

February 2022
Hello, I'm Certes. An edit that you recently made to Integral symbol seemed to be a test and has been reverted. If you want to practice editing, please use the sandbox. If you think a mistake was made, or if you have any questions, you can leave me a message on my talk page. Thanks! Certes (talk) 11:32, 16 February 2022 (UTC)