Category: Algebra

Question Number 97564 by Power last updated on 08/Jun/20 Answered by Rio Michael last updated on 09/Jun/20 $$\mathrm{Ones}\mathrm{our}\mathrm{teacher}\mathrm{put}\mathrm{this}\mathrm{on}\mathrm{the}\mathrm{board},\mathrm{we}\mathrm{puzzeled}\mathrm{even}$$$$\mathrm{the}\mathrm{geniuses}\mathrm{of}\mathrm{our}\mathrm{class}\mathrm{tried}\mathrm{it}\mathrm{out}\mathrm{but}\mathrm{it}\mathrm{turned}\mathrm{out}$$$$\mathrm{even}\mathrm{the}\mathrm{teacher}{\mathrm{couldn}}^{\prime }\mathrm{t}\mathrm{find}\mathrm{a}\mathrm{particular}\mathrm{summation}\mathrm{formula}$$$$\mathrm{which}\:\mathrm{described}\:\mathrm{this}\:\mathrm{series}\:\mathrm{even}\:\mathrm{to}\:\mathrm{an}\:\mathrm{approximate}.\:\mathrm{Some}\: \…

Question Number 163099 by HongKing last updated on 03/Jan/22 $$1.{\mathrm{u}}_{\mathbf{x}\mathbf{x}}=\mathbf{x}+\mathbf{y}$$$$2.{\mathbf{u}}_{\mathbf{x}\mathbf{y}}=\mathbf{x}-\mathbf{y}$$ Answered by mr W last updated on 04/Jan/22 $$\left.\mathrm{1}\right)…

Question Number 163082 by HongKing last updated on 03/Jan/22 $$1.{\mathrm{u}}_{\mathbf{x}\mathbf{x}}-{2\mathrm{u}}_{\mathbf{x}\mathbf{y}}+{3\mathrm{u}}_{\mathbf{y}\mathbf{y}}-{\mathrm{u}}_{\mathbf{x}}=0$$$$2.{\mathrm{xu}}_{\mathbf{x}\mathbf{x}}+{2\mathrm{xu}}_{\mathbf{x}\mathbf{y}}+{3\mathrm{u}}_{\mathbf{y}\mathbf{y}}+{\mathrm{u}}_{\mathbf{y}}=0$$ Commented by mahdipoor…

Question Number 163075 by tounghoungko last updated on 03/Jan/22 $$\frac{x^3+1}{x^2-1}=x+\sqrt{\frac{6}{x}}$$ Answered by Rasheed.Sindhi last updated on 03/Jan/22 $$\:\:\:\:\:\:\:\:\:\:\:\:\:\:\frac{{x}^{\mathrm{3}} +\mathrm{1}}{{x}^{\mathrm{2}} −\mathrm{1}}\:=\:{x}+\sqrt{\frac{\mathrm{6}}{{x}}} \…

Question Number 31990 by gunawan last updated on 17/Mar/18 $$a_n=2a_{n-1}+3a_{n-2}$$$$a_0=1$$$$a_1=2$$$$a_n=\dots$$ Commented by…