https://hzcis.cn/math/Start Loving Math From HERE!https://hzcis.cn/math/?id=174<ol class=" list-paddingleft-2" style="list-style-type: decimal;"><li><p>a) 2x-y =7<br/></p><p>b) 9x+8y=6</p><p>c) 3x-2y=-7</p></li><li><p>a) 10x +5y=-7</p><p>b) y=(4<span style="text-wrap: wrap;">√3-8</span>)x+4-4<span style="text-wrap: wrap;">√3 , or&nbsp;<span style="text-wrap: wrap;">y=(-4</span><span style="text-wrap: wrap;">√3-8</span><span style="text-wrap: wrap;">)x+4+4</span><span style="text-wrap: wrap;">√3</span></span></p></li><li><p>a=1</p></li><li><p>1/2</p></li><li><p>a) x=2</p><p>b) y=-8x+19</p><p>c) y- 3 = -(7+5√2）（x-2)</p></li></ol>Thu, 23 Nov 2023 16:35:17 +0800https://hzcis.cn/math/?id=172<p><img src="https://hzcis.cn/math/zb_users/upload/2022/03/202203231648000325722007.png" style="" title="截屏2022-03-23 上午9.49.35.png"/></p><p><img src="https://hzcis.cn/math/zb_users/upload/2022/03/202203231648000334308080.png" style="" title="截屏2022-03-23 上午9.46.23.png"/></p><p><img src="https://hzcis.cn/math/zb_users/upload/2022/03/202203231648000344591390.png" style="" title="截屏2022-03-23 上午9.46.50.png"/></p><p style="text-align: justify; font-family: Calibri; font-size: 14px; white-space: normal;"><br/></p>Wed, 23 Mar 2022 09:48:23 +0800https://hzcis.cn/math/?id=141<p><img title="Annotation 2019-03-01 152650.jpg" style="" src="https://hzcis.cn/math/zb_users/upload/2019/03/201903011551425880178976.jpg"/></p><p><img title="Annotation 2019-03-01 153404.jpg" style="" src="https://hzcis.cn/math/zb_users/upload/2019/03/201903011551425880336218.jpg"/></p><p><br/></p>Wed, 23 Mar 2022 08:22:24 +0800https://hzcis.cn/math/?id=142<p><img title="Annotation 2019-03-01 152818.jpg" style="" src="https://hzcis.cn/math/zb_users/upload/2019/03/201903011551425910531500.jpg"/></p><p><img title="Annotation 2019-03-01 153713.jpg" style="" src="https://hzcis.cn/math/zb_users/upload/2019/03/201903011551425910161774.jpg"/></p><p><br/></p>Wed, 23 Mar 2022 08:20:41 +0800https://hzcis.cn/math/?id=171<p><br/></p><p><br/></p><p><img src="https://hzcis.cn/math/zb_users/upload/2020/11/202011021604298553904242.png" style="" title="屏幕快照 2020-11-02 下午2.28.41.png"/></p><p><img src="https://hzcis.cn/math/zb_users/upload/2020/11/202011021604298553418920.png" title="屏幕快照 2020-11-02 下午2.28.46.png" style="white-space: normal;"/><img src="https://hzcis.cn/math/zb_users/upload/2020/11/202011021604298553724962.png" title="屏幕快照 2020-11-02 下午2.28.49.png" style="white-space: normal;"/></p>Mon, 02 Nov 2020 14:28:13 +0800https://hzcis.cn/math/?id=170<p style=";font-size: 16px;font-family: Cambria;white-space: normal">HW (for extended)</p><p style=";font-size: 16px;font-family: Cambria;white-space: normal">Distance for Point – line</p><p style=";font-size: 16px;font-family: Cambria;white-space: normal">&nbsp;</p><p style="margin: 0 0 0 48px;font-size: 16px;font-family: Cambria;white-space: normal">1.<span style="font-variant-numeric: normal;font-variant-east-asian: normal;font-stretch: normal;font-size: 9px;line-height: normal;font-family: &#39;Times New Roman&#39;">&nbsp;&nbsp;&nbsp;&nbsp; </span>Find the distance between (3,4) to the line 2x-5y=-1 &nbsp;</p><p style="margin: 0 0 0 48px;font-size: 16px;font-family: Cambria;white-space: normal">(answer:13root29/29&nbsp;)&nbsp;</p><p style=";font-size: 16px;font-family: Cambria;white-space: normal">&nbsp;</p><p style=";font-size: 16px;font-family: Cambria;white-space: normal">&nbsp;</p><p style=";font-size: 16px;font-family: Cambria;white-space: normal">&nbsp;</p><p style=";font-size: 16px;font-family: Cambria;white-space: normal">&nbsp;</p><p style=";font-size: 16px;font-family: Cambria;white-space: normal">&nbsp;</p><p style=";font-size: 16px;font-family: Cambria;white-space: normal">&nbsp;</p><p style=";font-size: 16px;font-family: Cambria;white-space: normal">&nbsp;</p><p style="margin: 0 0 0 48px;font-size: 16px;font-family: Cambria;white-space: normal">2.<span style="font-variant-numeric: normal;font-variant-east-asian: normal;font-stretch: normal;font-size: 9px;line-height: normal;font-family: &#39;Times New Roman&#39;">&nbsp;&nbsp;&nbsp;&nbsp; </span>Find the distance between (-1,-4) to the line 3x+y=7</p><p style="margin: 0 0 0 48px;font-size: 16px;font-family: Cambria;white-space: normal">&nbsp;(answer: 7root10/ 5)</p><p style=";font-size: 16px;font-family: Cambria;white-space: normal">&nbsp;</p><p style=";font-size: 16px;font-family: Cambria;white-space: normal">&nbsp;</p><p style=";font-size: 16px;font-family: Cambria;white-space: normal">&nbsp;</p><p style=";font-size: 16px;font-family: Cambria;white-space: normal">&nbsp;</p><p style=";font-size: 16px;font-family: Cambria;white-space: normal">&nbsp;</p><p style=";font-size: 16px;font-family: Cambria;white-space: normal">&nbsp;</p><p style=";font-size: 16px;font-family: Cambria;white-space: normal">&nbsp;</p><p style=";font-size: 16px;font-family: Cambria;white-space: normal">&nbsp;</p><p class="MsoListParagraph" style="margin: 0 0 0 48px;font-size: 16px;font-family: Cambria;white-space: normal">3.<span style="font-variant-numeric: normal;font-variant-east-asian: normal;font-stretch: normal;font-size: 9px;line-height: normal;font-family: &#39;Times New Roman&#39;">&nbsp;&nbsp;&nbsp;&nbsp; </span>Find the formula of the distance between (a,b) to the line Ax+By=C, verify your formula with the answers above. &nbsp;(answer: it depends on how you prove it and what forms you express)</p><p><br/></p>Wed, 14 Oct 2020 10:48:11 +0800https://hzcis.cn/math/?id=3<p>知新 Practicing</p><p><img src="https://hzcis.cn/math/zb_users/upload/2017/08/201708271503819259298248.png" title="001.PNG" width="500"/></p><p><br/></p><p>挑战 Challenging</p><p><img src="https://hzcis.cn/math/zb_users/upload/2017/08/201708271503819259827109.png" title="002.PNG" width="500"/></p>Sun, 23 Aug 2020 17:09:27 +0800https://hzcis.cn/math/?id=6<p><img src="https://hzcis.cn/math/zb_users/upload/2017/09/201709051504619223658750.png" width="500"/></p><p><img src="https://hzcis.cn/math/zb_users/upload/2017/09/201709051504619223751073.png" width="500"/></p><p><br/></p><p><br/></p>Sun, 23 Aug 2020 17:08:47 +0800https://hzcis.cn/math/?id=5<p>温故</p><p><img src="https://hzcis.cn/math/zb_users/upload/2018/08/201808241535102269733297.png" title="屏幕快照 2018-08-24 下午5.16.34.png" alt="屏幕快照 2018-08-24 下午5.16.34.png"/></p><p>知新<br/></p><p><img src="https://hzcis.cn/math/zb_users/upload/2017/08/201708291504014708125280.png" title="01-03-002.PNG" width="500"/></p><p>挑战</p><p><img src="https://hzcis.cn/math/zb_users/upload/2017/08/201708291504014728232120.png" title="01-03-003.PNG" width="500"/></p><p><br/></p>Sun, 23 Aug 2020 17:06:59 +0800https://hzcis.cn/math/?id=8<p><img src="https://hzcis.cn/math/zb_users/upload/2017/09/201709061504697373285235.png" style="" title="wengu3.PNG"/></p><p><img src="https://hzcis.cn/math/zb_users/upload/2017/09/201709061504697383173103.png" style="" title="tiaozhan1.PNG"/></p><p><img src="https://hzcis.cn/math/zb_users/upload/2017/09/201709061504700530918205.png" style="" title="tiaozhan23.PNG" alt="tiaozhan23.PNG"/></p><p><br/></p><p><br/></p><p><br/></p><p><br/></p><p><br/></p><p><br/></p>Sun, 23 Aug 2020 17:06:20 +0800