<p>设函数<img src="https://learnfile.20230611.cn/learnAppQuestion/2a/42/2a420389119be02664bab88a4b118d4f.jpg" style="width: 100%;height: auto;">,证明<img src="https://learnfile.20230611.cn/learnAppQuestion/1b/cd/1bcd043e754ba3a3b221babf86c36613.jpg" style