document.write('<div class=\"sidebar\"><a id=\"copytext\" data-clipboard-action=\"copy\" data-clipboard-target=\"#docopy\" class=\"fuzhi\"><span>一键复制</span></a><a class=\"sidedown dl-link\"   href=\"javascript:;\" id=\"vipdown\"  onclick=\"showpay(2)\"><span>下载文档</span></a><a href=\"javascript:;\" class=\"gf_tousu\" onclick=\"showkf()\"><span>联系客服</span></a><a id=\"leftButton\" class=\"fuzhi\" onclick="add()"><span>A+</span></a><a id=\"rightButton\" class=\"fuzhi\" onclick="cut()"><span>A-</span></a></div><div class="d_alert marks" price="0.5"  redodown="1"  myuserid="0" token="9c27230286" iscopy="0"classid="178"  copyid="docopy" userid="56" payurl="/" sign="c7065ef92a" ddno1="rwlv" ispc="pc" id="21880"  showid="" vip="newstext"  num="0" dotype="2"><div class="copy-alert alert-bounceIn"><div class="claos closepay"></div><div class="paybox paybox1"><div class="payitem payitem1 item-active" isone="0" gmoney="0.5" ><span class="hot"></span><div class="paybox-title">直接下载</div><div class="paybox-img" style="margin-top:15px;"><img src="/skin/fword/images/paper_one.png"></div><div class="paybox-art">单次下载</div><div class="paybox-money"><strong>0.5元/次</strong></div><div class="paybottom"><div class="paybox-bottom paylogin2" onclick="showcode(1)">微信支付</div></div></div></div><div class="paybox paybox1"><div class="payitem1" ><div class="paybox-title">免费下载</div><div class="pic"><img src="http://www.kebenku.com/skin/kebenku/images/weixin_kbk.jpg"></div><div class="help help1">公众号：<span id="mygzh">课本库网</span><span id="mycopy" data-clipboard-action="copy" data-clipboard-target="#mygzh">复制</span></div><div class="help">复制微信公众，搜索即可关注！</div><div class="check"><div class="checkbox"><input type="hidden"name="classid"value="178" freeuser="23c0006614adb9a1328a91e3a98b92b8"><input type="hidden"name="id" value="21880"><input type="hidden"name="dotype"value="2"><input type="hidden"name="showid" id="showid" value=""><input type="hidden"name="vip"value="newstext"><input placeholder="请在这里输入验证码" type="tel"id="vcode"class="vcode"name="code"maxlength="4"><input type="submit"class="mf-down mf-down-button"value="提交"></div><div class="check_error">关注微信公众号获取验证码</div></div></div></div><div class="xiazai"><div class="xiazai-box"><a href="javascript:;" onclick="showkf()"  class="redown">联系客服</a><a href="javascript:;"  class="redown" onclick="ajaxlogin();">立即登录</a><a href="javascript:;"   class="redown" onclick="showkf()">忘记账号</a></div></div></div></div><div class="pay_mask marks"><div class="mask_box"><div class="pay_mask_top">欢迎使用微信支付</div><div class="pay_qrcode"><img class="paycode" src=""></div><div class="pay_tip"><img src="/skin/fword/images/sys.png"alt="">扫一扫支付</div><div class="pay_price">金额：<span class="paymoney"></span></div><div class="claos closecode" ></div></div></div><div class="customer_mask mask"><div class="customer_service_box"><div class="cj_title"><span>常见问题</span></div><ul><li><div class="que">1、支付成功后，为何无法复制/下载</div><div class="ans">付费后复制不了，请核对下微信账单信息，确保付费成功；已付费成功了还是复制不了<br/>VIP会员登陆即可:<a href="javascript:;" onclick="AjaxLog()">点击这里</a><br/></div></li><li><div class="que">2、忘记账号和密码的解决办法</div><div class="ans">忘记账号请：<a href="javascript:;" onclick="showfaq()">点击这里</a><br/>忘记密码请：<a href="http://wpa.qq.com/msgrd?v=3&amp;uin=413224887&amp;site=qq&amp;menu=yes" target="_blank">点击这里</a></div></li><li><div class="que">3、如何联系客服</div><div class="ans">如果以上无法解决您的问题请：<a href="http://wpa.qq.com/msgrd?v=3&amp;uin=413224887&amp;site=qq&amp;menu=yes" target="_blank">站长QQ</a><br/>微信客服：413224887</div></li></ul><div class="member"><script src="/e/member/AjaxLog/loginjs2.php"></script></div><div class="claos closekf" ></div></div></div><div class="down_mask mask" ><div class="down_service_box"><div class="close" data-alert="customer_mask"></div><div class="cj_title"><span>下载中心</span></div><div class="down_body"><p>您的账号注册成功！密码为：123456，当前为默认信息，请及时修改</p><p><a href="" class="down">下载文件</a><a href="">立即修改</a></p></div><div class="claos closedown"></div></div></div><div class="faq_mask mask"><div class="faq_service_box" ><div class="close"data-alert="customer_mask"></div><div class="cj_title"><span>帮助中心</span></div><div class="faq_get"><p><input class="orderid" type="text" size="30" placeholder="请在这里订单号"></p><p><a class="getuser" href="javascript:;" onclick="getusername()">找回用户名</a></p></div><div class="faq-show"></div><div class="faq-tishi"><p><b>如何获取自己的订单号？</b></p><p>打开微信，找到微信支付，找到自己的订单，就能看到自己的交易订单号了。</p><p><img src="/skin/fword/images/faq.jpg"></p></div><div class="claos closefaq" ></div></div></div>');
 <!-- 新增自定义样式开始（未登录状态） -->
var d = document.getElementById('downdoc');
d.innerHTML = d.innerHTML + '<a class=\"dow_btn\" href=\"javascript:;\" id=\"vipdown\" onclick=\"showpay(2)\"><em></em>下载文档</a>';

var d = document.getElementById('downdoc1');
d.innerHTML = d.innerHTML + '<a class=\"download_word download_word_lb\" href=\"javascript:;\" id=\"vipdown\" onclick=\"showpay(2)\"><div class=\"download_card\"><div class=\"card_nr card_nr_lb\"><h4 class=\"card_bt\">函数的应用举例</h4><div class=\"download_card_msg\">的意识,也体现了函数知识的应用价值,也渗透了练习的价值.    3. 通过对实际问题的研究解决,渗透了数学建模的思想.提高了学生学习数学的爱好,使学生对函数思想等有了进一步的了解.     教学建议    教材分析    (1)本小节内容是全章知识的综合应用.这一节的出现体现了强化应用意识的要求,让学生能把数学知识应用到生产,生活的实际中去,形成应用数学的意识.所以培养学生分析解决问题的能力和运用数学的意识是本小节的重点,根据实际问题建立数学模型是本小节的难点.    (2)在解决实际问题过程中常用到函数。下面小编给大家分享函数的应用举例，希望能帮助到大家。 函数的应用举例文档下载网址链接：</div></div><div class=\"download_card_btn download_card_btn_lb\"><div class=\"content_box_tj\"><span>推荐度：</span><img src=\"/skin/zhann/images/icon_star.png\" alt=\"\">	<img src=\"/skin/zhann/images/icon_star.png\" alt=\"\">	<img src=\"/skin/zhann/images/icon_star.png\" alt=\"\">	<img src=\"/skin/zhann/images/icon_star.png\" alt=\"\"></div><div class=\"downlod_btn_right demo_tc downlod_btn_right_lb\"><em class=\"downlod_icon\"></em>点击下载文档<span>文档为doc格式</span></div> </div></div></a>';
<!-- 新增自定义样式结束（未登录状态） -->