Deprecated: $wgMWOAuthSharedUserIDs=false is deprecated, set $wgMWOAuthSharedUserIDs=true, $wgMWOAuthSharedUserSource='local' instead [Called from MediaWiki\HookContainer\HookContainer::run in /var/www/html/w/includes/HookContainer/HookContainer.php at line 135] in /var/www/html/w/includes/Debug/MWDebug.php on line 372
DLMF:4.18#Ex2 - MaRDI portal

DLMF:4.18#Ex2 (Q1839)

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DLMF:4.18#Ex2
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    Statements

    | sin z | 6 5 | z | 𝑧 6 5 𝑧 {\displaystyle{\displaystyle|\sin z|\leq\tfrac{6}{5}|z|}}
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    | z | < 1 𝑧 1 {\displaystyle{\displaystyle|z|<1}}
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