File was renamed from src/books/math/view/components/chapter001.vue |
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| | | <p class="center openImgBox"> |
| | | <img class="img-c" alt="" src="../../assets/images/0100-3.jpg" /> |
| | | </p> |
| | | <p class="img fl al-cn ju-cn"> |
| | | <span>图3-14 </span |
| | | ><img |
| | | :src="chapterData.isCollectImg ? collectCheck : collectImg" |
| | | alt="" |
| | | class="collect-btn" |
| | | @click="handleCollect('img')" |
| | | /> |
| | | </p> |
| | | <p class="img">图3-14</p> |
| | | <p> |
| | | 观察图3-14(1) |
| | | 发现,函数<i>f</i>(<i>x</i>)=|<i>x</i>|的定义域是(-∞,+∞),函数图像关于<i>y</i>轴对称.从表3-11中还发现,当自变量取一对相反数时,对应的函数值相等,如<i>f</i>(-1)=<i>f</i>(1)=1,<i>f</i>(-2)=<i>f</i>(2)=2,<i>f</i>(-3)=<i>f</i>(3)=3,…实际上,对任意<i>x</i>∈(-∞,+∞),都有<i>f</i>(-<i>x</i>)=|-<i>x</i>|=|<i>x</i>|=<i>f</i>(<i>x</i>),即<i>f</i>(-<i>x</i>)=<i>f</i>(<i>x</i>). |
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| | | style="width: 40%" |
| | | /> |
| | | </p> |
| | | <p class="img">图3-15</p> |
| | | <p class="img fl fl-cn ju-cn"> |
| | | <span>图3-15</span> |
| | | <el-tooltip class="item" effect="dark" :content="chapterData.isCollectImg ? '点击取消' : '点击收藏'" placement="top-start"> |
| | | <img |
| | | :src="chapterData.isCollectImg ? collectCheck : collectImg" |
| | | alt="" |
| | | class="collect-btn" |
| | | @click="handleCollect('img')" |
| | | /> |
| | | </el-tooltip> |
| | | </p> |
| | | <video |
| | | :src="videoPath" |
| | | webkit-playsinline="true" |
| | |
| | | controlslist="nodownload" |
| | | class="video-border w100" |
| | | ></video> |
| | | <p class="img fl al-cn ju-cn"> |
| | | <p class="img fl fl-cn ju-cn"> |
| | | <span>视频:判数函数奇偶性的方法和步骤 </span> |
| | | <el-tooltip class="item" effect="dark" :content="chapterData.isCollectVideo ? '点击取消' : '点击收藏'" placement="top-start"> |
| | | <img |
| | | :src="chapterData.isCollectVideo ? collectCheck : collectImg" |
| | | alt="" |
| | | class="collect-btn" |
| | | @click="handleCollect('video')" |
| | | /> |
| | | </el-tooltip> |
| | | </p> |
| | | <p> |
| | | <span class="zt-ls"><b>例1</b></span |
| | |
| | | > |
| | | <svg |
| | | xmlns="http://www.w3.org/2000/svg" |
| | | width="20.501" |
| | | height="20.501" |
| | | width="18.501" |
| | | height="18.501" |
| | | viewBox="0 0 20.501 20.501" |
| | | > |
| | | <path |
| | |
| | | <span class="btn-box" @click="openThinkingDialog"> |
| | | <svg |
| | | xmlns="http://www.w3.org/2000/svg" |
| | | width="20.545" |
| | | height="22.112" |
| | | width="18.545" |
| | | height="20.112" |
| | | viewBox="0 0 20.545 22.112" |
| | | > |
| | | <path |
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| | | /> |
| | | </svg> |
| | | </span> |
| | | <span class="btn-box" @click="openMathDiaolog"> |
| | | <svg |
| | | xmlns="http://www.w3.org/2000/svg" |
| | | xmlns:xlink="http://www.w3.org/1999/xlink" |
| | | width="18.323" |
| | | height="18.939" |
| | | viewBox="0 0 18.323 15.939" |
| | | > |
| | | <g transform="translate(-398 -946)"> |
| | | <path |
| | | class="a" |
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| | | transform="translate(398 948)" |
| | | /> |
| | | <path |
| | | class="b" |
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| | | transform="translate(398 948)" |
| | | /> |
| | | <path |
| | | class="a" |
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| | | transform="translate(398 948)" |
| | | /> |
| | | </g> |
| | | </svg> |
| | | </span> |
| | | <span class="btn-box" @click="stepDialog = true"> |
| | | <svg |
| | | xmlns="http://www.w3.org/2000/svg" |
| | | width="19.28" |
| | | height="20.563" |
| | | width="17.28" |
| | | height="19.563" |
| | | viewBox="0 0 19.28 20.563" |
| | | > |
| | | <g transform="translate(-109.056 -82.941)"> |
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| | | </g> |
| | | </svg> |
| | | </span> |
| | | <span class="btn-box" @click="openMathDiaolog"> |
| | | <svg |
| | | xmlns="http://www.w3.org/2000/svg" |
| | | xmlns:xlink="http://www.w3.org/1999/xlink" |
| | | width="17.323" |
| | | height="17.939" |
| | | viewBox="0 0 18.323 15.939" |
| | | > |
| | | <g transform="translate(-398 -946)"> |
| | | <path |
| | | class="a" |
| | | d="M11.985,1.241a.894.894,0,0,1-.242.623.79.79,0,0,1-.6.263.644.644,0,0,1-.547-.229,3.034,3.034,0,0,1-.339-.741A.935.935,0,0,0,10.1.846a.4.4,0,0,0-.291-.1.36.36,0,0,0-.333.18,1.836,1.836,0,0,0-.2.478L8.251,4.753H9.7l-.27.79H8.043l-1.51,4.849a27.9,27.9,0,0,1-1.06,2.93,5.5,5.5,0,0,1-1.316,1.857,3.11,3.11,0,0,1-2.189.755,2.258,2.258,0,0,1-1.455-.409A1.192,1.192,0,0,1,0,14.618a.97.97,0,0,1,.27-.693.894.894,0,0,1,.693-.291.741.741,0,0,1,.693.27,1.815,1.815,0,0,1,.2.693c0,.381.2.575.492.575a.817.817,0,0,0,.693-.478,6.983,6.983,0,0,0,.568-1.469L6,5.543H4.5l.236-.776h1.5l.159-.54a14.548,14.548,0,0,1,.693-2.016A4.544,4.544,0,0,1,8.313.694,2.91,2.91,0,0,1,10.281,0a2.425,2.425,0,0,1,.8.145,1.5,1.5,0,0,1,.693.429.963.963,0,0,1,.236.693Z" |
| | | transform="translate(398 948)" |
| | | /> |
| | | <path |
| | | class="b" |
| | | d="M18.323,5.668a3.505,3.505,0,0,1-.152,1.046H17.36a3.969,3.969,0,0,0,.166-1.06.5.5,0,0,0-.062-.236.27.27,0,0,0-.249-.132.346.346,0,0,0-.229.076c-.069.055-.222.208-.471.471L14.936,7.489a22.329,22.329,0,0,0-1.552,1.621l-1.815,1.974a2.168,2.168,0,0,1-1.385.859c-.492,0-.741-.333-.741-.991a3.575,3.575,0,0,1,.3-1.385h.914a4.766,4.766,0,0,0-.263,1.1c0,.18.048.263.159.263s.242-.111.464-.333l2.147-2.286c-.006-.033,1.525-1.611,1.524-1.6l1.3-1.385a2.078,2.078,0,0,1,1.385-.8.755.755,0,0,1,.776.388,1.9,1.9,0,0,1,.173.776Z" |
| | | transform="translate(398 948)" |
| | | /> |
| | | <path |
| | | class="a" |
| | | d="M14.936,7.489l.693,2.251a5.154,5.154,0,0,0,.236.61c.083.159.18.242.3.242a.82.82,0,0,0,.533-.457,4.849,4.849,0,0,0,.339-.817H17.8a4.849,4.849,0,0,1-.693,1.51,2.813,2.813,0,0,1-.873.852,1.766,1.766,0,0,1-.88.27,1.178,1.178,0,0,1-1.018-.464,4.357,4.357,0,0,1-.623-1.309l-.326-1.067a6.4,6.4,0,0,0-.222-.8L12.747,7c-.083-.27-.152-.478-.2-.6a1.136,1.136,0,0,0-.194-.312.4.4,0,0,0-.284-.118c-.326,0-.6.423-.817,1.261h-.769a6.671,6.671,0,0,1,.6-1.5,3.034,3.034,0,0,1,.81-.873,1.663,1.663,0,0,1,.942-.312,1.344,1.344,0,0,1,1.067.471,3.692,3.692,0,0,1,.644,1.268l.139.436C14.672,6.7,14.936,7.489,14.936,7.489Z" |
| | | transform="translate(398 948)" |
| | | /> |
| | | </g> |
| | | </svg> |
| | | </span> |
| | | </li> |
| | | <li class="fl fl-cn"> |
| | | <p>(2) <i>f</i>(<i>x</i>)=<i>x</i><sup>2</sup>+<i>x</i>;</p> |
| | |
| | | > |
| | | <svg |
| | | xmlns="http://www.w3.org/2000/svg" |
| | | width="20.501" |
| | | height="20.501" |
| | | width="18.501" |
| | | height="18.501" |
| | | viewBox="0 0 20.501 20.501" |
| | | > |
| | | <path |
| | |
| | | <svg |
| | | xmlns="http://www.w3.org/2000/svg" |
| | | xmlns:xlink="http://www.w3.org/1999/xlink" |
| | | width="18.323" |
| | | height="18.939" |
| | | width="17.323" |
| | | height="17.939" |
| | | viewBox="0 0 18.323 15.939" |
| | | > |
| | | <g transform="translate(-398 -946)"> |
| | |
| | | > |
| | | <svg |
| | | xmlns="http://www.w3.org/2000/svg" |
| | | width="20.501" |
| | | height="20.501" |
| | | width="18.501" |
| | | height="18.501" |
| | | viewBox="0 0 20.501 20.501" |
| | | > |
| | | <path |
| | |
| | | <svg |
| | | xmlns="http://www.w3.org/2000/svg" |
| | | xmlns:xlink="http://www.w3.org/1999/xlink" |
| | | width="18.323" |
| | | height="18.939" |
| | | width="17.323" |
| | | height="17.939" |
| | | viewBox="0 0 18.323 15.939" |
| | | > |
| | | <g transform="translate(-398 -946)"> |
| | |
| | | for (let index = 0; index < res.data.data.length; index++) { |
| | | const item = res.data.data[index]; |
| | | if(item.infoList.length) { |
| | | for (let cindex = 0; cindex < item.infoList.length; cindex++) { |
| | | for ( |
| | | let cindex = 0; |
| | | cindex < item.infoList.length; |
| | | cindex++ |
| | | ) { |
| | | const citem = item.infoList[cindex]; |
| | | const question = oldAnswer[9].find(ditem => ditem.id == citem.id) |
| | | const question = oldAnswer[9].find( |
| | | (ditem) => ditem.id == citem.id |
| | | ); |
| | | if(question) { |
| | | citem.userAnswer = question.userAnswer |
| | | citem.userAnswer = question.userAnswer; |
| | | } |
| | | } |
| | | } |