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
3.8#Ex2 - MaRDI portal

3.8#Ex2 (Q1340)

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3.8#Ex2
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    ϕ ( x ) = x + x cot 2 x - cot x . italic-ϕ 𝑥 𝑥 𝑥 2 𝑥 𝑥 {\displaystyle{\displaystyle\phi(x)=x+x{\cot^{2}}x-\cot x.}}
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