Class 12 Book Solution from Miscellaneous in Increasing and Decreasing Function Question No: 318
প্রমাণ করো যে, \(f(x) = x + \frac{1}{x} (x \ne 0)\) অপেক্ষক সব \(x \in (-1, 0) \cup (0, 1)\)-তে ক্ষয়িষ্ণু ।

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