{"ops":[{"attributes":{"class":"normal-img"},"insert":{"native-image":{"alt":"read-normal-img","url":"https://b1.sanwen.net/b_article/watermark/65af4916d2261bb63ce8c6bbbef9c352e4291620.jpg","width":1080,"height":431,"size":82624,"status":"loaded"}}},{"insert":"前两问比较基础。第三问考虑证明通项，于是利用对数均值不等式加以证明，过程较为简洁。\n"},{"attributes":{"class":"normal-img"},"insert":{"native-image":{"alt":"read-normal-img","url":"https://b1.sanwen.net/b_article/watermark/5f1ef56fbec2667bf2d67e6dc4090df6f548f2a1.jpg","width":1704,"height":1936,"size":501437,"status":"loaded"}}},{"insert":"\n"}]}
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