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Author: Tinku Tara

m-3-4m-

Question Number 64175 by harish kumar last updated on 15/Jul/19 $${m}^{\mathrm{3}} \:−\mathrm{4}{m}\: \\ $$ Commented by Prithwish sen last updated on 15/Jul/19 $$\mathrm{m}\left(\mathrm{m}^{\mathrm{2}} −\mathrm{4}\right)\:=\:\mathrm{m}\left(\mathrm{m}−\mathrm{2}\right)\left(\mathrm{m}+\mathrm{2}\right) \\…

show-tbat-k-1-n-1-sin-2-2n-sin-2-2k-1-4-pi-cos-

Question Number 64173 by Eminem last updated on 14/Jul/19 $${show}\:{tbat}\:\underset{{k}=\mathrm{1}} {\overset{{n}} {\prod}}\left(\mathrm{1}−\frac{{sin}^{\mathrm{2}} \left(\frac{\theta}{\mathrm{2}{n}}\right)}{{sin}^{\mathrm{2}} \left(\frac{\mathrm{2}{k}−\mathrm{1}}{\mathrm{4}}\pi\right)}\right)={cos}\left(\theta\right) \\ $$ Commented by Prithwish sen last updated on 15/Jul/19 $$\mathrm{Is}'\mathrm{nt}\:\mathrm{it}\:\mathrm{cos}^{\mathrm{n}}…

let-f-x-0-1-dt-x-2-t-with-x-gt-0-1-determine-a-explicit-form-for-f-x-2-determine-also-g-x-0-1-dt-x-2-x-2-3-give-f-n-x-at-form-of-integral-4-calculate-0-1-dt

Question Number 64160 by mathmax by abdo last updated on 14/Jul/19 $${let}\:{f}\left({x}\right)\:=\int_{\mathrm{0}} ^{\mathrm{1}} \:\frac{{dt}}{{x}\:+\mathrm{2}^{{t}} }\:\:{with}\:{x}>\mathrm{0} \\ $$$$\left.\mathrm{1}\right)\:{determine}\:{a}\:{explicit}\:{form}\:{for}\:{f}\left({x}\right) \\ $$$$\left.\mathrm{2}\right)\:{determine}\:{also}\:{g}\left({x}\right)=\int_{\mathrm{0}} ^{\mathrm{1}} \:\frac{{dt}}{\left({x}+\mathrm{2}^{{x}} \right)^{\mathrm{2}} } \\ $$$$\left.\mathrm{3}\right)\:{give}\:{f}^{\left({n}\right)}…