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Category: Integration

find-I-0-1-dx-1-x-1-x-2-

Question Number 30494 by abdo imad last updated on 22/Feb/18 $${find}\:{I}=\:\int_{\mathrm{0}} ^{\mathrm{1}} \:\:\:\:\frac{{dx}}{\left(\mathrm{1}+{x}\right)\sqrt{\mathrm{1}+{x}^{\mathrm{2}} }}\:\:. \\ $$ Answered by sma3l2996 last updated on 24/Feb/18 $${x}={sinh}\left({t}\right)\Rightarrow{dx}={cosh}\left({t}\right){dt}=\sqrt{\mathrm{1}+{sinh}^{\mathrm{2}} {t}}{dt}…

let-f-x-k-2-1-k-x-k-1-find-D-f-2-let-put-x-n-1-1-n-n-x-Rieman-alternate-serie-find-f-x-interms-of-x-

Question Number 30480 by abdo imad last updated on 22/Feb/18 $${let}\:{f}\left({x}\right)=\:\sum_{{k}=\mathrm{2}} ^{\infty} \:\:\frac{\left(−\mathrm{1}\right)^{{k}} }{{x}+{k}} \\ $$$$\left.\mathrm{1}\right)\:{find}\:{D}_{{f}} \\ $$$$\left.\mathrm{2}\right){let}\:{put}\:\delta\left({x}\right)=\:\sum_{{n}=\mathrm{1}} ^{\infty} \:\:\frac{\left(−\mathrm{1}\right)^{{n}} }{{n}^{{x}} }\:\:\left({Rieman}\:{alternate}\:{serie}\right) \\ $$$${find}\:{f}\left({x}\right)\:{interms}\:{of}\:\delta\left({x}\right). \\…

f-function-2-derivable-prove-that-L-f-pL-f-f-o-and-L-f-p-2-L-f-pf-0-f-0-2-let-f-t-tsin-wt-find-L-f-

Question Number 30477 by abdo imad last updated on 22/Feb/18 $${f}\:{function}\:\mathrm{2}\left(×\right)\:{derivable}\:{prove}\:{that} \\ $$$${L}\left({f}^{'} \right)=\:{pL}\left({f}\right)\:−{f}\left({o}\right)\:{and}\:{L}\left({f}^{''} \right)={p}^{\mathrm{2}} {L}\left({f}\right)−{pf}\left(\mathrm{0}\right)−{f}^{'} \left(\mathrm{0}\right) \\ $$$$\left.\mathrm{2}\right)\:{let}\:{f}\left({t}\right)={tsin}\left({wt}\right)\:{find}\:{L}\left({f}\right). \\ $$ Terms of Service Privacy…