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Question Number 127425 by mathocean1 last updated on 29/Dec/20 $$\left.{f}\left({x}\right)=\frac{\mathrm{1}}{{x}}\:;\:{x}\in\:\right]\mathrm{0};+\infty\left[.\right. \\ $$$${show}\:{that}\:{f}\:{is}\:{indefinitly}\: \\ $$$${derivable}. \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 192957 by York12 last updated on 31/May/23 $$ \\ $$$${bx}^{\mathrm{3}} =\mathrm{10}{a}^{\mathrm{2}} {bx}\:+\:\mathrm{3}{a}^{\mathrm{3}} {y}\:,\:{ay}^{\mathrm{3}} =\:\mathrm{10}{ab}^{\mathrm{2}} {y}\:+\:\mathrm{3}{b}^{\mathrm{3}} {x} \\ $$$${solve}\:{for}\:{x}\:{and}\:{y}\:{in}\:{terms}\:{of}\:\left({a}\:,\:{b}\right) \\ $$$${and}\:{solve}\:{for}\:{a}\:{and}\:{b}\:{in}\:{terms}\:{of}\:\:\left({x}\:,\:{y}\:\right) \\ $$ Commented…
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Question Number 61886 by aliesam last updated on 10/Jun/19 $${a}+{bi}=\frac{\mathrm{2}+{i}}{\mathrm{1}−{i}} \\ $$$${find}\: \\ $$$$\mathrm{2}\left({a}^{\mathrm{2}} +{b}^{\mathrm{2}} \right) \\ $$ Answered by MJS last updated on 10/Jun/19…
Question Number 192959 by Mingma last updated on 31/May/23 Answered by a.lgnaoui last updated on 01/Jun/23 $$\bigtriangleup\mathrm{MYX}\:\mathrm{et}\:\:\mathrm{KYX}\:\:\:\mathrm{triangles}\:\mathrm{rectangles} \\ $$$$\mathrm{en}\:\mathrm{plus}\:\:\mathrm{la}\:\mathrm{corde}\:\mathrm{commun}\:\mathrm{YZ}=\mathrm{2XY} \\ $$$$\Rightarrow\:\mathrm{YX}\:=\frac{\mathrm{YZ}}{\mathrm{2}}=\mathrm{10} \\ $$$$\:\:\mathrm{MK}=\mathrm{MX}+\mathrm{XK} \\ $$$$\bigtriangleup\mathrm{MYX}\:\:\:\:\mathrm{MY}^{\mathrm{2}}…
Question Number 127420 by liberty last updated on 29/Dec/20 $$\:\int_{\mathrm{0}} ^{\:\infty} \:\frac{{x}−\mathrm{1}}{\:\sqrt{\mathrm{2}^{{x}} −\mathrm{1}}\:\mathrm{ln}\:\left(\mathrm{2}^{{x}} −\mathrm{1}\right)}\:{dx}\:? \\ $$ Answered by mnjuly1970 last updated on 29/Dec/20 $${solution}: \\…
Question Number 61885 by maxmathsup by imad last updated on 10/Jun/19 $${let}\:{I}\:=\int_{−\infty} ^{+\infty} \:\:\frac{{dx}}{\left({x}+{i}\right)^{{n}} }\:\:{and}\:{J}\:=\int_{−\infty} ^{+\infty} \:\:\frac{{dx}}{\left({x}−{i}\right)^{{n}} } \\ $$$$\left.\mathrm{1}\right)\:{calculate}\:{I}\:{and}\:{J}\:{interms}\:{of}\:{n} \\ $$$$\left.\mathrm{2}\right)\:{find}\:{thevalue}\:{of}\:{integral} \\ $$$${A}_{{n}} \:\:=\int_{−\infty}…
Question Number 192958 by Mingma last updated on 31/May/23 Answered by Frix last updated on 01/Jun/23 $$\mathrm{Question}\:\mathrm{191675} \\ $$$${x}=\frac{\mathrm{1}+\sqrt{\mathrm{5}}}{\mathrm{2}} \\ $$$$\left(\mathrm{2}{x}−\mathrm{1}\right)^{\mathrm{4}} =\left(\sqrt{\mathrm{5}}\right)^{\mathrm{4}} =\mathrm{25} \\ $$…