Category: Algebra

Question Number 76772 by Master last updated on 30/Dec/19 Terms of Service Privacy Policy Contact: info@tinkutara.com

Question Number 76771 by Master last updated on 30/Dec/19 Terms of Service Privacy Policy Contact: info@tinkutara.com

Question Number 11228 by uni last updated on 17/Mar/17 Answered by mrW1 last updated on 17/Mar/17 $$\left(_{\mathrm{2}} ^{\mathrm{6}} \right)×\left(_{\mathrm{1}} ^{\mathrm{4}} \right)+\left(_{\mathrm{2}} ^{\mathrm{4}} \right)×\left(_{\mathrm{1}} ^{\mathrm{6}} \right)=\frac{\mathrm{6}×\mathrm{5}}{\mathrm{2}}×\mathrm{4}+\frac{\mathrm{4}×\mathrm{3}}{\mathrm{2}}×\mathrm{6}=\mathrm{96}…

Question Number 11214 by uni last updated on 17/Mar/17 Answered by FilupS last updated on 17/Mar/17 $$a+\frac{b}{a}=4\Rightarrow b=a(4-a)$$$$\because a\in \mathbb{Z}\mathrm{and}\mathrm{RHS}\in \mathbb{Z},\therefore b\in \mathbb{Z}$$$$$$$$\therefore a=\frac{b}{4-a}$$$$\because{a}\in\mathbb{Z},\:\:\:\frac{{b}}{\mathrm{4}−{a}}\in\mathbb{Z},\:\:\:\:\:\therefore\left(\mathrm{4}−{a}\right)\:\mathrm{is}\:\mathrm{a}\:\mathrm{factor}…

Question Number 11203 by FilupS last updated on 16/Mar/17 $$f\left(x\right)={(\frac{x}{x+1}-\frac{x}{x-1})}^{-1}=-\frac{(x+1)(x-1)}{2x}$$$$g\left(x\right)=-\frac{1}{2}x$$$$$$$$\mathrm{why}\mathrm{is}f\left(x\right)\approx g\left(x\right)?$$ Answered by mrW1 last updated on…