{"ops":[{"insert":"背景：周末老師布置了這套卷子，揚言最后一題最后一問不叫我們寫，寫了也寫不出來，2h做出來就是勝利。本人初見黨，給他做出來了，并在空間里炫耀了一番（劃掉）（可惜沒有計時）。今天老師評講這套卷子，有幾題講得太不嚴謹了令我血壓升高。我深感高中理科教學的局限性，想在這里同感興趣的人分享一下自己對這套卷子幾道自認為有意思的題的思考與感想（當然我沒有批判我們老師的意思，畢竟學生在成長中的認知總是分階段的）。\n\n（不過我高三了，現(xiàn)在已經(jīng)1月，沒有時間用word公式打出來，只能采用晚自習手寫+回家拍照碼專欄的形式，字丑什么的還請多多諒解，甚至連這個背景都寫的很草率（劃掉\n\n第7題：我的做法跟參考答案一樣，用的是正（拉）弦（密）定理，就是設(shè)的角不一樣（拉密定理的介紹可以看BV1yZ4y1x7ds的p4，跟正弦定理差不多好理解）\n"},{"attributes":{"class":"normal-img"},"insert":{"native-image":{"alt":"read-normal-img","url":"https://b2.sanwen.net/b_article/7a7ab561398df4ddadd86feb4bcfc307e2f8ff0e.jpg","width":2079,"height":878,"size":965697,"status":"loaded"}}},{"insert":"\n"},{"attributes":{"class":"normal-img"},"insert":{"native-image":{"alt":"read-normal-img","url":"https://b2.sanwen.net/b_article/d0ce026e46b5d6e68dfcae8f05fa9e491343ede2.jpg","width":1081,"height":390,"size":229490,"status":"loaded"}}},{"insert":"第8題C中電場強度兩個分量易知是相等的，如何嚴謹證明兩個分量等大反向？可以用幾何法加目測或向量法研究方向向量。（可能書寫上有些不嚴謹）\n"},{"attributes":{"class":"normal-img"},"insert":{"native-image":{"alt":"read-normal-img","url":"https://b2.sanwen.net/b_article/29e57196c0b56f7381aac9d1cc6a2ac0f41f36d5.jpg","width":2080,"height":617,"size":656922,"status":"loaded"}}},{"insert":"\n\n"},{"attributes":{"class":"normal-img"},"insert":{"native-image":{"alt":"read-normal-img","url":"https://b2.sanwen.net/b_article/560ad5aa755309739af90c91f30e3d97e95a7c6c.jpg","width":1386,"height":1040,"size":1008170,"status":"loaded"}}},{"insert":"第16題（3）中重力功和摩擦力功在下滑過程中都在增大，根據(jù)高中生特有的樸素理科直覺可知它在某一瞬間速度應(yīng)有最大值，接下來就是用數(shù)列求通項公式的知識來計算了（原諒我參考答案的過程看不懂\n"},{"attributes":{"class":"normal-img"},"insert":{"native-image":{"alt":"read-normal-img","url":"https://b2.sanwen.net/b_article/1a56840c8032c058200aa41838beee3efb104734.jpg","width":1386,"height":1040,"size":1037300,"status":"loaded"}}},{"insert":"\n"},{"attributes":{"class":"normal-img"},"insert":{"native-image":{"alt":"read-normal-img","url":"https://b2.sanwen.net/b_article/3205c729f222ed85908f091fc899dc020e0fec51.jpg","width":862,"height":285,"size":141505,"status":"loaded"}}},{"insert":"（真 跡）\n\n"},{"attributes":{"class":"normal-img"},"insert":{"native-image":{"alt":"read-normal-img","url":"https://b2.sanwen.net/b_article/3bd65e28933711bdc264be854b63ab231ceb9d46.jpg","width":1081,"height":581,"size":406564,"status":"loaded"}}},{"insert":"\n"},{"attributes":{"class":"normal-img"},"insert":{"native-image":{"alt":"read-normal-img","url":"https://b2.sanwen.net/b_article/24c3d0d5142b34ffdb85cdccea9ae8d1079f579e.jpg","width":1386,"height":1040,"size":974372,"status":"loaded"}}},{"insert":"\n"},{"attributes":{"class":"normal-img"},"insert":{"native-image":{"alt":"read-normal-img","url":"https://b2.sanwen.net/b_article/21cfaaebe5614308f736aebf8e9188e4b9b8c291.jpg","width":1414,"height":2155,"size":1444651,"status":"loaded"}}},{"insert":"感謝閱讀\n"}]}