Question Number 90963 by abdomathmax last updated on 27/Apr/20 $${solve}\:\left(\mathrm{1}+{x}^{\mathrm{2}} \right){y}^{'} \:+{xy}\:=\sqrt{\mathrm{1}+{x}^{\mathrm{2}} } \\ $$ Commented by niroj last updated on 27/Apr/20 $$\:\:\:\left(\mathrm{1}+\mathrm{x}^{\mathrm{2}} \right)\mathrm{y}^{'} \:+\mathrm{xy}\:=\:\sqrt{\mathrm{1}+\mathrm{x}^{\mathrm{2}}…
Question Number 90965 by abdomathmax last updated on 27/Apr/20 $${solve}\:{the}\:\left({de}\right)\:\:{ch}\left({x}\right){y}^{'} \:+{sh}\left({x}\right){y}\:={xe}^{−{x}} \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 90960 by mathmax by abdo last updated on 27/Apr/20 $${let}\:{f}\left({x}\right)\:={x}^{\mathrm{3}} {cos}\left(\mathrm{2}{x}\right) \\ $$$${calculate}\:{f}^{\left({n}\right)} \left({x}\right)\:{and}\:{f}^{\left({n}\right)} \left(\mathrm{0}\right) \\ $$ Commented by mathmax by abdo last…
Question Number 90958 by mathmax by abdo last updated on 27/Apr/20 $${let}\:{f}\left({z}\right)\:=\frac{\mathrm{3}}{{zsin}\left({z}^{\mathrm{2}} \right)} \\ $$$${calculate}\:{Res}\left({f},\mathrm{0}\right) \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 25279 by NECx last updated on 07/Dec/17 $${Find}\:{the}\:{domain}\:{and}\:{range}\:{of} \\ $$$${f}\left({x}\right)=\sqrt{\left(\frac{{x}−\mathrm{5}}{{x}−\mathrm{3}}\right)} \\ $$ Answered by SAGARSTARK last updated on 07/Dec/17 $$\left(\frac{{x}−\mathrm{5}}{{x}−\mathrm{3}}\right)\geqslant\mathrm{0}\:\boldsymbol{\mathrm{x}}\in\left(−\infty,\mathrm{3}\right)\cup\left[\mathrm{5},\infty\right)\:{using}\: \\ $$$${wavy}\:{curve}\:{method} \\…
Question Number 25280 by NECx last updated on 07/Dec/17 $${Find}\:{the}\:{limit}\:{off}\left({x}\right)\underset{{x}\rightarrow\mathrm{4}} {\:}=\left(\frac{{x}+\mathrm{2}}{{x}^{\mathrm{2}} −\mathrm{4}}\right) \\ $$ Answered by Rasheed.Sindhi last updated on 07/Dec/17 $$\mathrm{Since}\:\mathrm{limit}\:\mathrm{of}\:\mathrm{the}\:\mathrm{denominator}\neq\mathrm{0} \\ $$$$\mathrm{So} \\…
Question Number 25251 by NECx last updated on 07/Dec/17 $${state}\:{the}\:{domain}\:{and}\:{range}\:{in}\: \\ $$$${intervals}\:{for}\:{the}\:{following}\:{when} \\ $$$${they}\:{are}\:{said}\:{the}\:{be}\:{continuous}\:{at} \\ $$$${a}\:{point}: \\ $$$$\left.{a}\right){a}\:{polynomial}\:{function} \\ $$$$\left.{b}\right){a}\:{rational}\:{function} \\ $$$$\left.{c}\right){an}\:{absolute}\:{value}\:{function} \\ $$$$\left.{d}\right){a}\:{trig}\:{function} \\…
Question Number 90750 by abdomathmax last updated on 25/Apr/20 $${let}\:\:\alpha\:{and}\:\beta\:{roots}\:{of}\:\:{x}^{\mathrm{2}} −{x}+\mathrm{2}=\mathrm{0}\:\:{calculate} \\ $$$${A}_{{n}} =\sum_{{k}=\mathrm{0}} ^{{n}} \:\left(\alpha^{{k}} \:+\beta^{{k}} \right) \\ $$$${B}_{{n}} =\:\sum_{{k}=\mathrm{0}} ^{{n}} \left(\alpha^{{k}} −\beta^{{k}} \right)…
Question Number 90751 by abdomathmax last updated on 25/Apr/20 $$\:{calculste}\:{lim}_{{n}\rightarrow\infty} \:\:\frac{\mathrm{1}}{{n}^{\mathrm{2}} }\sum_{{k}=\mathrm{1}} ^{{n}} \:{karctan}\left(\frac{{k}}{{n}}\right) \\ $$ Commented by mathmax by abdo last updated on 26/Apr/20…
Question Number 90749 by abdomathmax last updated on 25/Apr/20 $${find}\:\sum_{{k}=\mathrm{0}} ^{{n}} \:{C}_{{n}} ^{{k}} \:{cos}\left(\frac{{k}\pi}{{n}}\right) \\ $$ Commented by mathmax by abdo last updated on 26/Apr/20…