Category: Set Theory

Question Number 44826 by Joel578 last updated on 05/Oct/18 $$\mathrm{Let}A\mathrm{and}B\mathrm{be}\mathrm{sets}.$$$$\mathrm{Prove}\mathrm{that}A=B\mathrm{if}\mathrm{and}\mathrm{only}\mathrm{if}A\cup B=A\cap B$$ Answered by Kunal12588 last updated on 05/Oct/18 $$A\cup B=A\cap B\dots \dots \left(1\right)$$$${let}\:\:{x}\in{A} \…

Question Number 175353 by Eulerian last updated on 28/Aug/22 $${\mathrm{ax}}^2+\mathrm{bx}+\mathrm{c}=0$$$$$$$$\mathrm{x}=\frac{-\mathrm{b}\pm \sqrt{{\mathrm{b}}^2-4\mathrm{ac}}}{2\mathrm{a}}$$$$$$$$\mathrm{Example}:$$$$$$$$\:\mathrm{Find}\:\mathrm{the}\:\mathrm{values}\:\mathrm{of}\:\mathrm{x}\:\mathrm{in}\:\mathrm{the}\:\mathrm{equation} \…

Question Number 173065 by mnjuly1970 last updated on 06/Jul/22 Commented by a.lgnaoui last updated on 06/Jul/22 $$103$$ Commented by mr W last updated…

Question Number 104694 by Don08q last updated on 23/Jul/20 Terms of Service Privacy Policy Contact: info@tinkutara.com

Question Number 168480 by amin96 last updated on 11/Apr/22 $${\mathbf{n}}^2+\mathbf{n}+109={\mathbf{x}}^2$$$$\mathbf{x}-\mathbf{integer}$$$$\mathbf{positive}\mathbf{integer}\mathbf{solutions}\mathbf{n}=?$$ Commented by Rasheed.Sindhi last updated on 11/Apr/22 $$\mathrm{n}=\mathrm{3},\mathrm{20},\mathrm{35},……