我都玩好久啦,中奖率挺高的!你快来试试你的手气吧~https://act7.amap.com/activity/2020CommonLanding/index.html?schema=amapuri%3A%2F%2Fwebview%2Famaponline%3Furl%3Dhttps%253A%252F%252Fcache.amap.com%252Factivity%252F2023infoFreeFood%252Findex.html%253Fgd_from%253Dshare%2526token%253Da621b52b6632a4561e7cf109a48655c4f6f168293abc913c7bfc34b2eedf9db3fc0519c007a29f4801099816c83906e1a062383326e81bee210bfcf7c695dd545a4ba6cf12e1a6292338393badda85d7%2526act_id%253D619ba754%2526type%253DliebianShare%2526sharePrice%253D0%2526bizType%253D2%2526userAvatar%253Dhttp%25253A%25252F%25252Faos-cdn-image.amap.com%25252Fpp%25252Favatar%25252F0c2%25252Fe7%25252F83%25252F1080409132.jpeg%25253Fver%25253D1708737910%252526imgoss%25253D1%2526userNick%253D%2525E5%2525A4%2525A7%2525E7%25258E%25258B%2526indexShareData%253D%25255Bobject%252520Object%25255D%2526lotteryDiningShareData%253D%25255Bobject%252520Object%25255D%2526fissionShareData%253D%25255Bobject%252520Object%25255D%2526notLotteryDiningShareData%253D%25255Bobject%252520Object%25255D%2526freeCouponLotteryShareData%253D%25255Bobject%252520Object%25255D%2526uidShare%253D1080409132%26hide_title%3D1%26sourceApplication%3Dactivity_2022_food_national%26urlType%3D0%26contentType%3Dautonavi&local=1&id=activity_2022_food_national&shareId=chihewanle_miandan_101&whiteList=amap.com&share_type=0&share_channel=weibo #高德地图#
【中考数学压轴题:必考经典题型解析(24)】
如图,在△ABC中,AB=5,AC=9,S△ABC=27/2,动点P从A点出发,沿射线AB方向以每秒5个单位的速度运动,动点Q从C点出发,以相同的速度在线段AC上由C向A运动,当Q点运动到A点时,P、Q两点同时停止运动,以PQ为边作正方形PQEF(P、Q、E、F按逆时针排序),以CQ为边在AC上方作正方形QCGH.
(1)求tanA的值;
(2)设点P运动时间为t,正方形PQEF的面积为S,请探究S是否存在最小值?若存在,求出这个最小值,若不存在,请说明理由;
(3)当t为何值时,正方形PQEF的某个顶点(Q点除外)落在正方形QCGH的边上,请直接写出t的值.
#在微博做个题# #微博开学季# #课外提升指南# #中考#
如图,在△ABC中,AB=5,AC=9,S△ABC=27/2,动点P从A点出发,沿射线AB方向以每秒5个单位的速度运动,动点Q从C点出发,以相同的速度在线段AC上由C向A运动,当Q点运动到A点时,P、Q两点同时停止运动,以PQ为边作正方形PQEF(P、Q、E、F按逆时针排序),以CQ为边在AC上方作正方形QCGH.
(1)求tanA的值;
(2)设点P运动时间为t,正方形PQEF的面积为S,请探究S是否存在最小值?若存在,求出这个最小值,若不存在,请说明理由;
(3)当t为何值时,正方形PQEF的某个顶点(Q点除外)落在正方形QCGH的边上,请直接写出t的值.
#在微博做个题# #微博开学季# #课外提升指南# #中考#
伴读:新的一年,万物更新,旧疾当愈,长安常安 https://mp.weixin.qq.com/s?__biz=MjM5MTg2MDg4MA==&mid=2832643998&idx=6&sn=2f926e730d849ef700eee483b9f3e89c&chksm=8aa6ac6f05d020005c632e87987710a74e393bc897c804565a4860abc7d334f3e6b88ca951fa&xtrack=1&scene=0&subscene=274&sessionid=1708338258&clicktime=1708724608&enterid=1708724608&ascene=7&fasttmpl_type=0&fasttmpl_fullversion=7089552-zh_CN-zip&fasttmpl_flag=0&realreporttime=1708724608830&devicetype=android-33&version=28002f35&nettype=WIFI&abtest_cookie=AAACAA%3D%3D&lang=zh_CN&session_us=gh_476e9bd4e780&countrycode=CN&exportkey=n_ChQIAhIQlfbO3R32%2FwL56fMvXEJtVxLrAQIE97dBBAEAAAAAAHtiEIPN6u4AAAAOpnltbLcz9gKNyK89dVj0j2QmTFaG8rBic8pOGReb5mP4Y3Y%2BV0ACHQDalchFcnXzYJhM%2BMFS0DVIzCQ1%2FFWCM1lS9BPIkEOu6pRXqpDh9EkNrM%2Bvg6w3FxuxViuMaHYsx%2Bn0OdmFlLT33xKPncLDQx9Kr8aE7AwVxuAdcmEjjG8bUj30wt3ZaBjUSdvv8V0eX1TtU4e057Fq0%2B7EPE6Wc%2FvBVtg1tF%2BcrrXfVq%2BvQ5Bib984EI1QYgHg%2Bwp%2F4agRyRM0ruxq3Qeb8sTBpI0hvf%2BnAlk%3D&pass_ticket=6nPkUH5REZ1wq7tRi08xxoAcRDw%2B2lDc7IbVhdagPMe9HoBTGWKE9ox2ttWSWU75hihtjtoijGT%2FfwUC%2FXWgag%3D%3D&wx_header=3&t=2
✋热门推荐