Category: Algebra

Question Number 145023 by mathdanisur last updated on 01/Jul/21 Commented by Rasheed.Sindhi last updated on 02/Jul/21 $$\mathcal{B}y\overline{{\mathit{c}}^2{\mathit{c}\mathit{b}\mathit{b}}^6}doyoumeandigital$$$$representationofanumber?$$ Commented…

Question Number 13929 by ajfour last updated on 25/May/17 $$proveforreal\mathit{x},\mathit{y}and\mathit{a}that$$$$\sqrt{{(\mathit{x}+\mathit{a})}^2+{\mathit{y}}^2}+\sqrt{{(\mathit{x}-\mathit{a})}^2+{\mathit{y}}^2}⩾2\sqrt{x^2+y^2}.$$$$$$ Answered by mrW1…

Question Number 145002 by mathdanisur last updated on 01/Jul/21 $$Findthelastdigitofthenumber:$$$$1^{1989}+2^{1989}+3^{1989}+\dots +{1989}^{1989}$$ Commented by mr W last updated on 01/Jul/21…

Question Number 144981 by mathdanisur last updated on 01/Jul/21 $$\underset{k=1}{\sum ^{35}}\frac{\sqrt{k}}{k+\sqrt{k^2+k}}=?$$ Answered by liberty last updated on 01/Jul/21 $$\:\frac{\sqrt{\mathrm{k}}}{\mathrm{k}+\sqrt{\mathrm{k}^{\mathrm{2}} +\mathrm{k}}}\:=\:\frac{\sqrt{\mathrm{k}}\:\left(\mathrm{k}−\sqrt{\mathrm{k}^{\mathrm{2}} +\mathrm{k}}\right)}{−\mathrm{k}}…

Question Number 79424 by peter frank last updated on 25/Jan/20 $$Derivethewidthofthe$$$$diffractionpatternfor$$$$thecaseof$$$$\left(i\right)singleslits$$$$\left(ii\right)doubleslits$$ Terms of Service Privacy…