Category: Algebra

Question Number 408 by 112358 last updated on 30/Dec/14 $$Isthesequence\left\{u_n\right\}definedbytheformula{u}_n=\frac{n+{(-1.5)}^n}{lgn},wheren\in Z^{+}\mid n⩾2,convergent?Ifsofinditssumasn\to \mathrm{\infty }.$$ Commented by 123456 last updated on 30/Dec/14 $${u}_{{n}} =\frac{{n}+\left(−\mathrm{1}.\mathrm{5}\right)^{{n}}…

Question Number 131440 by Study last updated on 04/Feb/21 $$\mid 2x+7\mid <-2solve=?$$ Commented by Dwaipayan Shikari last updated on 04/Feb/21 $$Nosolution$$$$\mid f\left(x\right)\mid ⩾0\left(Always\right)$$…

Question Number 131430 by mathlove last updated on 04/Feb/21 $$\sqrt[\frac{1}{x}]{(\sqrt[\frac{1}{x}]{{x{}^x)}^x}}=4findx=?$$ Commented by math35 last updated on 04/Feb/21 $$\sqrt[{\frac{\mathrm{1}}{{x}}}]{\left(\sqrt[{\frac{\mathrm{1}}{{x}}}]{{x}^{{x}^{\mathrm{2}} } }\right.}=\mathrm{4} \…

Question Number 65866 by Sayantan chakraborty last updated on 05/Aug/19 Commented by Sayantan chakraborty last updated on 05/Aug/19 $$pleasehelp.Urgentneed.$$ Commented by Sayantan chakraborty…

Question Number 65853 by ajfour last updated on 05/Aug/19 $$x^4-23x^2+18x+40=0$$$$solveforx.$$ Answered by ajfour last updated on 05/Aug/19 $${generally}\:\:{if}\:{x}^{\mathrm{4}} +{ax}^{\mathrm{2}}…