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Question-222783

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Question Number 222783 by MathematicalUser2357 last updated on 07/Jul/25 $$\:\underbrace{ } \\ $$ Answered by AntonCWX8 last updated on 07/Jul/25 $${f}\left({x}\right)=\frac{\mathrm{1}}{\mathrm{5}}{x}^{\mathrm{5}} −\frac{\mathrm{5}}{\mathrm{3}}{x}^{\mathrm{3}} +\mathrm{4}{x}+\mathrm{2} \\ $$$${f}'\left({x}\right)={x}^{\mathrm{4}}…

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n-1-1-cosh-4-n-ln-2-1-

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Question Number 222592 by Tawa11 last updated on 30/Jun/25 $$\underset{\mathrm{n}\:=\:\mathrm{1}} {\overset{\infty} {\sum}}\:\frac{\mathrm{1}}{\mathrm{cosh}^{\mathrm{4}} \left[\mathrm{n}\:\mathrm{ln}\left(\sqrt{\mathrm{2}}\:\:+\:\:\mathrm{1}\right)\right]} \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com

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Prove-k-1-k-sinh-pik-1-4-4-8pi-2-32pi-3-

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Question Number 222276 by Nicholas666 last updated on 27/Jun/25 $$ \\ $$$$\:\mathrm{Prove};\:\underset{{k}\:=\:\mathrm{1}} {\overset{\infty} {\sum}}\:\frac{{k}}{\mathrm{sinh}\left(\pi{k}\right)}\:=\:\frac{\Gamma\left(\frac{\mathrm{1}}{\mathrm{4}}\right)^{\mathrm{4}} −\:\mathrm{8}\pi^{\mathrm{2}} }{\mathrm{32}\pi^{\mathrm{3}} }\:\:\:\:\:\:\:\:\:\:\:\:\:\: \\ $$$$ \\ $$ Terms of Service Privacy…

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