DLMF:18.18.E21
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Math Formula Information
Formula: Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \ChebyshevpolyT{m}@{x}\ChebyshevpolyT{n}@{x}=\tfrac{1}{2}(\ChebyshevpolyT{m+n}@{x}+\ChebyshevpolyT{m-n}@{x}).}
Name: DLMF:18.18.E21
Description:
Data Source
https://lct.wmflabs.org/w/index.php?title=Special:EntityPage/Q5811