User talk:203.193.149.35

February 2020
Please refrain from making unconstructive edits to Wikipedia, as you did at Chebyshev filter. Your edits appear to constitute vandalism and have been reverted. If you would like to experiment, please use the sandbox. Repeated vandalism may result in the loss of editing privileges. Thank you. SpinningSpark 18:11, 29 February 2020 (UTC)