Question Number 156426 by ZiYangLee last updated on 11/Oct/21 $$\mathrm{Given}\:\mathrm{that}\:\mathrm{tan}\:\alpha\:\mathrm{and}\:\mathrm{tan}\:\beta\:\mathrm{are}\:\mathrm{the}\:\mathrm{roots}\: \\ $$$$\mathrm{of}\:\mathrm{the}\:\mathrm{equation}\:{x}^{\mathrm{2}} +\mathrm{3}{ax}+\mathrm{4}{a}+\mathrm{1}=\mathrm{0},\: \\ $$$$\mathrm{where}\:{a}>\mathrm{1}\:\mathrm{and}\:\alpha,\beta\in\left(−\frac{\pi}{\mathrm{2}},\frac{\pi}{\mathrm{2}}\right).\: \\ $$$$\mathrm{Evaluate}\:\mathrm{tan}\left(\frac{\alpha+\beta}{\mathrm{2}}\right). \\ $$ Answered by mr W last updated…
Question Number 156422 by SANOGO last updated on 11/Oct/21 Commented by cortano last updated on 11/Oct/21 $$\:\mathrm{let}\:\mathrm{x}=\mathrm{t}^{\mathrm{6}} \:\rightarrow\mathrm{dx}=\mathrm{6t}^{\mathrm{5}} \:\mathrm{dt} \\ $$$$\mathrm{I}=\int\:\frac{\mathrm{t}^{\mathrm{3}} }{\mathrm{1}−\mathrm{t}^{\mathrm{2}} }\:\left(\mathrm{6t}^{\mathrm{5}} \:\mathrm{dt}\right) \\…
Question Number 156413 by KONE last updated on 10/Oct/21 Answered by KONE last updated on 10/Oct/21 $${svp}\:{besoin}\:{d}\:{aide}\:{pour}\:{la}\:{question}\:\mathrm{2} \\ $$ Answered by mindispower last updated on…
Question Number 156403 by abdurehime last updated on 10/Oct/21 $$\mathrm{find}\:\mathrm{two}\:\mathrm{numbers}\:\mathrm{between}\: \\ $$$$\frac{\mathrm{1}}{\mathrm{3}}\mathrm{and}\:\frac{\mathrm{3}}{\mathrm{4}} \\ $$ Commented by MJS_new last updated on 10/Oct/21 $$\frac{\mathrm{1}}{\mathrm{3}}=\frac{\mathrm{4}}{\mathrm{12}} \\ $$$$\frac{\mathrm{3}}{\mathrm{4}}=\frac{\mathrm{9}}{\mathrm{12}} \\…
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Question Number 156381 by aliyn last updated on 10/Oct/21 $$\int_{\mathrm{0}} ^{\:\frac{\boldsymbol{\pi}}{\mathrm{2}}} \:\frac{\boldsymbol{{x}}^{\mathrm{2}} }{\boldsymbol{{sin}}\left(\boldsymbol{{x}}\right)}\:\boldsymbol{{dx}} \\ $$ Commented by aliyn last updated on 11/Oct/21 $$???? \\ $$…
Question Number 25308 by NECx last updated on 08/Dec/17 $${A}\:{man}\:{pushes}\:{a}\:{box}\:{of}\:\mathrm{40}{kg}\:{up}\:{an} \\ $$$${incline}\:{of}\:\mathrm{15}°.{If}\:{the}\:{man}\:{applied} \\ $$$${a}\:{horizontal}\:{force}\:\mathrm{200}{N}\:{and}\:{the} \\ $$$${box}\:{moves}\:{up}\:{the}\:{plane}\:{a}\:{distance} \\ $$$${of}\:\mathrm{20}{m}\:{at}\:{a}\:{constant}\:{velocity}\:{and} \\ $$$${the}\:{coefficient}\:{of}\:{friction}\:{is}\:\mathrm{0}.\mathrm{10}, \\ $$$${find} \\ $$$$\left.{a}\right){workdone}\:{by}\:{the}\:{man}\:{on}\:{the} \\…
Question Number 25307 by NECx last updated on 08/Dec/17 $${An}\:{object}\:{constrained}\:{to}\:{move} \\ $$$${along}\:{the}\:{x}-{axis}\:{is}\:{acted}\:{upon}\:{by} \\ $$$${a}\:{force}\:{F}\left({x}\right)\:{where}\:{a}=\mathrm{5}{N}/{m}, \\ $$$${b}=−\mathrm{2}{N}/{m}.\:{F}\left({x}\right)={ax}+{bx}^{\mathrm{2}} \\ $$$${The}\:{object}\:{is}\:{observed}\:{to}\:{proceed} \\ $$$${directly}\:{from}\:{x}=\mathrm{1}{m}\:{to}\:{x}=\mathrm{3}{m}. \\ $$$${How}\:{much}\:{work}\:{was}\:{done}\:{by}\:{the} \\ $$$${object}\:{by}\:{the}\:{force}?{Does}\:{the} \\…
Question Number 156369 by tabata last updated on 10/Oct/21 $${solve}\:{by}\:{betta}\:{function}\:\int_{\mathrm{0}} ^{\mathrm{2}\pi} {sin}^{\mathrm{5}} \left({z}\right)\:{dz} \\ $$ Commented by tabata last updated on 10/Oct/21 $$???????? \\ $$…
Question Number 156367 by SANOGO last updated on 10/Oct/21 $$\:{lim}\rightarrow{oo}\:{n}\underset{{k}=\mathrm{0}} {\overset{\mathrm{2}{n}−\mathrm{1}} {\sum}}\frac{\mathrm{1}}{{k}^{\mathrm{2}} } \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com