Question Number 147795 by ajfour last updated on 23/Jul/21 Commented by ajfour last updated on 23/Jul/21 $${Find}\:{b}/{a}. \\ $$ Commented by mr W last updated…
Question Number 16720 by Manish Raj last updated on 25/Jun/17 $${let}\:{x}={tan}\theta\:,{so}\:\theta=\mathrm{tan}^{−\mathrm{1}} {x}\:{given}\:{that}\: \\ $$$$\mathrm{tan}^{−\mathrm{1}} \sqrt{\mathrm{1}+{x}\mathrm{2}−\mathrm{1}/{x}} \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 16719 by chux last updated on 25/Jun/17 $$\mathrm{what}\:\mathrm{are}\:\mathrm{best}\:\mathrm{apps}\:\mathrm{to}\:\mathrm{use}\:\mathrm{on} \\ $$$$\mathrm{android}\:\mathrm{phones}\:\mathrm{for}\:\mathrm{architectural} \\ $$$$\mathrm{works}? \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 147788 by peter frank last updated on 23/Jul/21 Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 147791 by Tawa11 last updated on 23/Jul/21 $$\mathrm{If}\:\:\:\:\:\:\:\mathrm{a}\:\:+\:\:\mathrm{b}\:\:+\:\:\mathrm{c}\:\:+\:\:\mathrm{d}\:\:\:=\:\:\:\mathrm{1} \\ $$$$\:\:\:\:\:\:\:\:\:\:\mathrm{a}^{\mathrm{2}} \:\:+\:\:\mathrm{b}^{\mathrm{2}} \:\:+\:\:\mathrm{c}^{\mathrm{2}} \:\:+\:\:\mathrm{d}^{\mathrm{2}} \:\:=\:\:\mathrm{2} \\ $$$$\:\:\:\:\:\:\:\:\:\:\mathrm{a}^{\mathrm{3}} \:\:+\:\:\mathrm{b}^{\mathrm{3}} \:\:+\:\:\mathrm{c}^{\mathrm{3}} \:\:+\:\:\mathrm{d}^{\mathrm{3}} \:\:=\:\:\mathrm{3} \\ $$$$\:\:\:\:\:\:\:\:\:\:\mathrm{a}^{\mathrm{4}} \:\:+\:\:\mathrm{b}^{\mathrm{4}}…
Question Number 147784 by Khalmohmmad last updated on 23/Jul/21 Answered by Olaf_Thorendsen last updated on 23/Jul/21 $${F}\left({x}\right)\:=\:\int\frac{{dx}}{\:\sqrt{\mathrm{7}{x}^{\mathrm{2}} −\mathrm{8}}} \\ $$$${F}\left({x}\right)\:=\:\frac{\mathrm{1}}{\:\sqrt{\mathrm{7}}}\int\frac{{dx}}{\:\sqrt{{x}^{\mathrm{2}} −\frac{\mathrm{8}}{\mathrm{7}}}} \\ $$$${F}\left({x}\right)\:=\:\frac{\mathrm{1}}{\:\sqrt{\mathrm{7}}}\mathrm{argch}\left(\frac{{x}}{\:\sqrt{\frac{\mathrm{8}}{\:\mathrm{7}}}}\right)+\mathrm{C} \\ $$$${F}\left({x}\right)\:=\:\frac{\mathrm{1}}{\:\sqrt{\mathrm{7}}}\mathrm{argch}\left(\frac{\mathrm{1}}{\mathrm{2}}\sqrt{\frac{\mathrm{7}}{\mathrm{2}}}{x}\right)+\mathrm{C}…
Question Number 82247 by jagoll last updated on 19/Feb/20 $$\left({D}^{\mathrm{4}} +\mathrm{2}{D}^{\mathrm{2}} +\mathrm{1}\right){y}\:={x}^{\mathrm{2}} \:\mathrm{cos}\:{x}\: \\ $$ Commented by john santu last updated on 20/Feb/20 $${characteristic}\:{equation}\: \\…
Question Number 82244 by M±th+et£s last updated on 19/Feb/20 $${find}\:{the}\:{function}\:{of}\:{f}\:{when}\:{this}\:\: \\ $$$${function}\:{continue}\:{at}\:{interval}\:\left[−\infty,\mathrm{0}\right] \\ $$$$\int_{−{x}^{\mathrm{2}} } ^{\mathrm{0}} {f}\left({t}\right)\:{dt}=\frac{{d}}{{dx}}\left[{x}\left(\mathrm{1}−{sin}\left(\pi{x}\right)\right]\right. \\ $$ Commented by mr W last updated…
Question Number 82245 by jagoll last updated on 19/Feb/20 $${find}\:{the}\:{solution}\: \\ $$$${x}\:\mathrm{sin}\:\left(\frac{{y}}{{x}}\right)\:{dy}\:=\:\left[{y}\:\mathrm{sin}\:\left(\frac{{y}}{{x}}\right)\:−{x}\right]\:{dx} \\ $$ Commented by john santu last updated on 19/Feb/20 $${let}\:{v}\:=\:\frac{{y}}{{x}}\:\Rightarrow\:{y}\:=\:{vx} \\ $$$$\frac{{dy}}{{dx}}\:=\:{v}\:+\:\frac{{dv}}{{dx}}\:\Rightarrow\:{dy}\:={v}\:{dx}+\:{dv}\:…
Question Number 82243 by M±th+et£s last updated on 19/Feb/20 Answered by mind is power last updated on 19/Feb/20 $${observation} \\ $$$$\forall{k}\in\mathbb{N}\:,\forall{x}\in\mathbb{R}_{+} \\ $$$$\mathrm{1}…. \\ $$$${x}^{{k}}…