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#2881 Bangla Language & Literature General Level 17703

<p>ধনাত্মক x এর জন্য &nbsp;<img src="http://www.sothik.com/files/model-test/du-20216/image047.png" alt="" /> হলে, F′(x) = ?</p>

  1. A <p><img src="http://www.sothik.com/files/model-test/du-20216/image048.png" alt="" /></p>
  2. B <p>ln x</p>
  3. C <p>x ln x – x</p>
  4. D <p>x ln x</p>
Answer: B - <p>ln x</p>

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