{"ops":[{"attributes":{"class":"normal-img"},"insert":{"native-image":{"alt":"read-normal-img","url":"https://b2.sanwen.net/b_article/a2e3299a6f180c78e9f470177144d9f231847ea4.jpg","width":1920,"height":868,"size":161882,"status":"loaded"}}},{"insert":"這是一個著名的極限傳統(tǒng)做法非常復(fù)雜比如視頻中的三個做法\n"},{"attributes":{"class":"normal-img"},"insert":{"native-image":{"alt":"read-normal-img","url":"https://b2.sanwen.net/b_article/d47637eb78e7114f7e36f784867722d370480d28.jpg","width":2388,"height":1080,"size":370071,"status":"loaded"}}},{"insert":"需要用到拉格朗日中值定理或者洛必達法則其中求導(dǎo)難度很大之后還需要泰勒公式和抓大頭 我們展示一種可以快速解決這題的做法。 逆用等價無窮小 在這個解法之前我們先復(fù)習一下傳統(tǒng)解法\n"},{"attributes":{"class":"normal-img"},"insert":{"native-image":{"alt":"read-normal-img","url":"https://b2.sanwen.net/b_article/1ae100219853089c1d7cb9d8d3253c950793040b.jpg","width":1500,"height":2000,"size":1118338,"status":"loaded"}}},{"insert":"首先來看傳統(tǒng)拉格朗日解法\n"},{"attributes":{"class":"normal-img"},"insert":{"native-image":{"alt":"read-normal-img","url":"https://b2.sanwen.net/b_article/5b9803500a45f67f5242fb43fd750d8654eefd86.jpg","width":1500,"height":2000,"size":1790888,"status":"loaded"}}},{"insert":"\n"},{"attributes":{"class":"normal-img"},"insert":{"native-image":{"alt":"read-normal-img","url":"https://b2.sanwen.net/b_article/18988044b5491c46e28dbe38162dbeb4a6d05ec5.jpg","width":1500,"height":2000,"size":1614219,"status":"loaded"}}},{"insert":"用到了抓小頭技巧 分母一大坨我們不需要算 只需要算出x前面系數(shù)為0然后知道x方為小頭計算x平方方前面系數(shù)即可 最后看看秒殺解法\n"},{"attributes":{"class":"normal-img"},"insert":{"native-image":{"alt":"read-normal-img","url":"https://b2.sanwen.net/b_article/b46825130c219329f379d6537e93d8ad1d2725fa.jpg","width":1500,"height":2000,"size":1742376,"status":"loaded"}}},{"insert":"\n"},{"attributes":{"class":"normal-img"},"insert":{"native-image":{"alt":"read-normal-img","url":"https://b2.sanwen.net/b_article/496cf31f32c15c63064ccce8a111db4dc7fdb962.jpg","width":1500,"height":2000,"size":1726040,"status":"loaded"}}},{"insert":"\n最后來個詳解版逆用等價無窮小\n\n"},{"attributes":{"class":"normal-img"},"insert":{"native-image":{"alt":"read-normal-img","url":"https://b2.sanwen.net/b_article/b75f8655ea2b0a17620a401a480643cedf4490ea.jpg","width":1500,"height":2000,"size":1830985,"status":"loaded"}}},{"insert":"\n"},{"attributes":{"class":"normal-img"},"insert":{"native-image":{"alt":"read-normal-img","url":"https://b2.sanwen.net/b_article/e5f21056b158ac3d175c6df35d142007a6dda30a.jpg","width":1500,"height":2000,"size":1840286,"status":"loaded"}}},{"insert":"\n"}]}