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0-2pi-3sintcost-dt-

Question Number 191723 by SANOGO last updated on 29/Apr/23 $$\int_{\mathrm{0}} ^{\mathrm{2}\pi} \mathrm{3}{sintcost}\:{dt} \\ $$ Answered by mehdee42 last updated on 29/Apr/23 $$\left.{I}=\frac{\mathrm{3}}{\mathrm{2}}{sin}^{\mathrm{2}} {t}\:\right]_{\mathrm{0}} ^{\mathrm{2}\pi} \:=\mathrm{0}…

Question-60635

Question Number 60635 by naka3546 last updated on 23/May/19 Answered by MJS last updated on 23/May/19 $$\mathrm{we}\:\mathrm{have}\:\mathrm{6}^{\mathrm{6}} =\mathrm{46656}\:\mathrm{possible}\:\mathrm{results} \\ $$$$\mathrm{33}= \\ $$$$\mathrm{666663}\:\Rightarrow\:\mathrm{6}\:\mathrm{permutations} \\ $$$$\mathrm{666654}\:\Rightarrow\:\mathrm{30}\:\mathrm{permutations} \\…

prove-that-x-2-e-x-2-cos-x-2-sin-x-2-dx-pi-sin-3-2-tan-1-2-4-125-1-4-anyone-can-help-me-with-this-please-

Question Number 60611 by aliesam last updated on 22/May/19 $${prove}\:{that}\:\underset{−\infty} {\overset{\infty} {\int}}{x}^{\mathrm{2}} {e}^{−{x}^{\mathrm{2}} } {cos}\left({x}^{\mathrm{2}} \right){sin}\left({x}^{\mathrm{2}} \right)\:{dx}\:=\:\frac{\sqrt{\pi}{sin}\left(\frac{\mathrm{3}}{\mathrm{2}}{tan}^{−\mathrm{1}} \left(\mathrm{2}\right)\right)}{\mathrm{4}\:\sqrt[{\mathrm{4}}]{\mathrm{125}}} \\ $$$${anyone}\:{can}\:{help}\:{me}\:{with}\:{this}\:{please} \\ $$$$ \\ $$ Answered…