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嗯,個人認為最重要的是練習. 我函數原本也不好,後來狂被老師逼著做練習,我發現,我函數比以前好了. 光做練習也不够,還得學會分析.這種分析你不一定要把推理過程想通,但是至少要自己懂. 可能有點亂,但這就是我的方法= =
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