###### tags: `Algebra` # HW3 > 1.11 ![](https://i.imgur.com/F04GO9H.png) > 1.13 ![](https://i.imgur.com/ncHO01V.png) ![](https://i.imgur.com/c8S8HNw.png) > 2.2 ![](https://i.imgur.com/Lc4VcR8.png) ![](https://i.imgur.com/k4uO3cy.png) > 2.3 ![](https://i.imgur.com/Q5EakUO.png) ![](https://i.imgur.com/IaYl1qq.png) > 2.4 ![](https://i.imgur.com/6hyvcQd.png) > 2.5 ![](https://i.imgur.com/oVCQAH4.png)