QnA fy - Recent questions tagged log https://qnafy.com/tag/log Powered by Question2Answer মান নির্ণয় কর: $\log_381$ https://qnafy.com/14924/%E0%A6%AE%E0%A6%BE%E0%A6%A8-%E0%A6%A8%E0%A6%BF%E0%A6%B0%E0%A7%8D%E0%A6%A3%E0%A7%9F-%E0%A6%95%E0%A6%B0-%24-log_381%24 Algebra https://qnafy.com/14924/%E0%A6%AE%E0%A6%BE%E0%A6%A8-%E0%A6%A8%E0%A6%BF%E0%A6%B0%E0%A7%8D%E0%A6%A3%E0%A7%9F-%E0%A6%95%E0%A6%B0-%24-log_381%24 Thu, 24 Jul 2025 18:18:16 +0000 মান নির্ণয় কর: $\log_5\sqrt[3]{5}$ https://qnafy.com/14923/%E0%A6%AE%E0%A6%BE%E0%A6%A8-%E0%A6%A8%E0%A6%BF%E0%A6%B0%E0%A7%8D%E0%A6%A3%E0%A7%9F-%E0%A6%95%E0%A6%B0-%24-log_5-sqrt-3-5-%24 Algebra https://qnafy.com/14923/%E0%A6%AE%E0%A6%BE%E0%A6%A8-%E0%A6%A8%E0%A6%BF%E0%A6%B0%E0%A7%8D%E0%A6%A3%E0%A7%9F-%E0%A6%95%E0%A6%B0-%24-log_5-sqrt-3-5-%24 Thu, 24 Jul 2025 18:17:44 +0000 মান নির্ণয় কর: $\log_42$ https://qnafy.com/14922/%E0%A6%AE%E0%A6%BE%E0%A6%A8-%E0%A6%A8%E0%A6%BF%E0%A6%B0%E0%A7%8D%E0%A6%A3%E0%A7%9F-%E0%A6%95%E0%A6%B0-%24-log_42%24 Algebra https://qnafy.com/14922/%E0%A6%AE%E0%A6%BE%E0%A6%A8-%E0%A6%A8%E0%A6%BF%E0%A6%B0%E0%A7%8D%E0%A6%A3%E0%A7%9F-%E0%A6%95%E0%A6%B0-%24-log_42%24 Thu, 24 Jul 2025 18:16:49 +0000 মান নির্ণয় কর: $\log_{2\sqrt5}400$ https://qnafy.com/14921/%E0%A6%AE%E0%A6%BE%E0%A6%A8-%E0%A6%A8%E0%A6%BF%E0%A6%B0%E0%A7%8D%E0%A6%A3%E0%A7%9F-%E0%A6%95%E0%A6%B0-%24-log_-2-sqrt5-400%24 Algebra https://qnafy.com/14921/%E0%A6%AE%E0%A6%BE%E0%A6%A8-%E0%A6%A8%E0%A6%BF%E0%A6%B0%E0%A7%8D%E0%A6%A3%E0%A7%9F-%E0%A6%95%E0%A6%B0-%24-log_-2-sqrt5-400%24 Thu, 24 Jul 2025 18:16:03 +0000 মান নির্ণয় কর: $\log_5\left(\sqrt[3]{5}\cdot\sqrt5\right)$ https://qnafy.com/14920/%E0%A6%AE%E0%A6%BE%E0%A6%A8-%E0%A6%A8%E0%A6%BF%E0%A6%B0%E0%A7%8D%E0%A6%A3%E0%A7%9F-%E0%A6%95%E0%A6%B0-%24-log_5-left-sqrt-3-5-cdot-sqrt5-right-%24 Algebra https://qnafy.com/14920/%E0%A6%AE%E0%A6%BE%E0%A6%A8-%E0%A6%A8%E0%A6%BF%E0%A6%B0%E0%A7%8D%E0%A6%A3%E0%A7%9F-%E0%A6%95%E0%A6%B0-%24-log_5-left-sqrt-3-5-cdot-sqrt5-right-%24 Thu, 24 Jul 2025 18:15:20 +0000 $x$ এর মান নির্ণয় কর: $\log_5x=3$ https://qnafy.com/14919/%24x%24-%E0%A6%8F%E0%A6%B0-%E0%A6%AE%E0%A6%BE%E0%A6%A8-%E0%A6%A8%E0%A6%BF%E0%A6%B0%E0%A7%8D%E0%A6%A3%E0%A7%9F-%E0%A6%95%E0%A6%B0-%24-log_5x-3%24 Algebra https://qnafy.com/14919/%24x%24-%E0%A6%8F%E0%A6%B0-%E0%A6%AE%E0%A6%BE%E0%A6%A8-%E0%A6%A8%E0%A6%BF%E0%A6%B0%E0%A7%8D%E0%A6%A3%E0%A7%9F-%E0%A6%95%E0%A6%B0-%24-log_5x-3%24 Thu, 24 Jul 2025 18:13:53 +0000 $x$ এর মান নির্ণয় কর: $\log_{x}25=2$ https://qnafy.com/14918/%24x%24-%E0%A6%8F%E0%A6%B0-%E0%A6%AE%E0%A6%BE%E0%A6%A8-%E0%A6%A8%E0%A6%BF%E0%A6%B0%E0%A7%8D%E0%A6%A3%E0%A7%9F-%E0%A6%95%E0%A6%B0-%24-log_-x-25-2%24 Algebra https://qnafy.com/14918/%24x%24-%E0%A6%8F%E0%A6%B0-%E0%A6%AE%E0%A6%BE%E0%A6%A8-%E0%A6%A8%E0%A6%BF%E0%A6%B0%E0%A7%8D%E0%A6%A3%E0%A7%9F-%E0%A6%95%E0%A6%B0-%24-log_-x-25-2%24 Thu, 24 Jul 2025 18:13:18 +0000 $x$ এর মান নির্ণয় কর: $\log_{x}\frac{1}{16}=-2$ https://qnafy.com/14917/%24x%24-%E0%A6%8F%E0%A6%B0-%E0%A6%AE%E0%A6%BE%E0%A6%A8-%E0%A6%A8%E0%A6%BF%E0%A6%B0%E0%A7%8D%E0%A6%A3%E0%A7%9F-%E0%A6%95%E0%A6%B0-%24-log_-x-frac-1-16-2%24 Algebra https://qnafy.com/14917/%24x%24-%E0%A6%8F%E0%A6%B0-%E0%A6%AE%E0%A6%BE%E0%A6%A8-%E0%A6%A8%E0%A6%BF%E0%A6%B0%E0%A7%8D%E0%A6%A3%E0%A7%9F-%E0%A6%95%E0%A6%B0-%24-log_-x-frac-1-16-2%24 Thu, 24 Jul 2025 18:12:46 +0000 দেখাও যে, $5\log_{10}5-\log_{10}25=\log_{10}125$ https://qnafy.com/14916/%E0%A6%A6%E0%A7%87%E0%A6%96%E0%A6%BE%E0%A6%93-%E0%A6%AF%E0%A7%87-%245-log_-10-5-log_-10-25-log_-10-125%24 Algebra https://qnafy.com/14916/%E0%A6%A6%E0%A7%87%E0%A6%96%E0%A6%BE%E0%A6%93-%E0%A6%AF%E0%A7%87-%245-log_-10-5-log_-10-25-log_-10-125%24 Thu, 24 Jul 2025 18:11:02 +0000 দেখাও যে, $\log_{10}\frac{50}{147}=\log_{10}2+\log_{10}5-\log_{10}3-2\log_{10}7$ https://qnafy.com/14915/%E0%A6%A6%E0%A7%87%E0%A6%96%E0%A6%BE%E0%A6%93-%E0%A6%AF%E0%A7%87-%24-log_-10-frac-50-147-log_-10-2-log_-10-5-log_-10-3-2-log_-10-7%24 Algebra https://qnafy.com/14915/%E0%A6%A6%E0%A7%87%E0%A6%96%E0%A6%BE%E0%A6%93-%E0%A6%AF%E0%A7%87-%24-log_-10-frac-50-147-log_-10-2-log_-10-5-log_-10-3-2-log_-10-7%24 Thu, 24 Jul 2025 18:09:58 +0000 দেখাও যে, $3\log_{10}2+2\log_{10}3+\log_{10}5=\log_{10}360$ https://qnafy.com/14914/%E0%A6%A6%E0%A7%87%E0%A6%96%E0%A6%BE%E0%A6%93-%E0%A6%AF%E0%A7%87-%243-log_-10-2-2-log_-10-3-log_-10-5-log_-10-360%24 Algebra https://qnafy.com/14914/%E0%A6%A6%E0%A7%87%E0%A6%96%E0%A6%BE%E0%A6%93-%E0%A6%AF%E0%A7%87-%243-log_-10-2-2-log_-10-3-log_-10-5-log_-10-360%24 Thu, 24 Jul 2025 18:08:42 +0000 সরল কর: $7\log_{10}\frac{10}{9}-2\log_{10}\frac{25}{24}+3\log_{10}\frac{81}{80}$ https://qnafy.com/14913/%E0%A6%B8%E0%A6%B0%E0%A6%B2-%E0%A6%95%E0%A6%B0-%247-log_-10-frac-10-9-2-log_-10-frac-25-24-3-log_-10-frac-81-80-%24 Algebra https://qnafy.com/14913/%E0%A6%B8%E0%A6%B0%E0%A6%B2-%E0%A6%95%E0%A6%B0-%247-log_-10-frac-10-9-2-log_-10-frac-25-24-3-log_-10-frac-81-80-%24 Thu, 24 Jul 2025 17:23:52 +0000 সরল কর: $\log_7\left(\sqrt[5]{7}\cdot\sqrt7\right)-\log_3\sqrt[3]{3}+\log_42$ https://qnafy.com/14912/%E0%A6%B8%E0%A6%B0%E0%A6%B2-%E0%A6%95%E0%A6%B0-%24-log_7-left-sqrt-5-7-cdot-sqrt7-right-log_3-sqrt-3-3-log_42%24 Algebra https://qnafy.com/14912/%E0%A6%B8%E0%A6%B0%E0%A6%B2-%E0%A6%95%E0%A6%B0-%24-log_7-left-sqrt-5-7-cdot-sqrt7-right-log_3-sqrt-3-3-log_42%24 Thu, 24 Jul 2025 17:21:46 +0000 সরল কর: $\log_{e}\frac{a^3b^3}{c^3}+\log_{e}\frac{b^3c^3}{d^3}+\log_{e}\frac{c^3d^3}{a^3}-3\log_{e}b^2c$ https://qnafy.com/14911/%E0%A6%B8%E0%A6%B0%E0%A6%B2-%E0%A6%95%E0%A6%B0-%24-log_-e-frac-a-3b-3-c-3-log_-e-frac-b-3c-3-d-3-log_-e-frac-c-3d-3-a-3-3-log_-e-b-2c%24 Algebra https://qnafy.com/14911/%E0%A6%B8%E0%A6%B0%E0%A6%B2-%E0%A6%95%E0%A6%B0-%24-log_-e-frac-a-3b-3-c-3-log_-e-frac-b-3c-3-d-3-log_-e-frac-c-3d-3-a-3-3-log_-e-b-2c%24 Thu, 24 Jul 2025 17:19:21 +0000 If $a^2+b^2=23ab$ then show that $\log a+ \log b=2 \log \left(\frac{a+b}{5}\right)$ https://qnafy.com/14903/if-%24a-2-b-2-23ab%24-then-show-that-%24-log-a-log-b-2-log-left-frac-a-b-5-right-%24 Algebra https://qnafy.com/14903/if-%24a-2-b-2-23ab%24-then-show-that-%24-log-a-log-b-2-log-left-frac-a-b-5-right-%24 Thu, 24 Jul 2025 10:41:17 +0000 যদি $\log\left(\frac ab\right)+\log\left(\frac ba\right)=\log\left(a+b\right)$ হয়, তবে $a+b=?$ https://qnafy.com/14055/%E0%A6%AF%E0%A6%A6%E0%A6%BF-%24-log-left-frac-ab-right-log-left-frac-ba-right-log-left-a-b-right-%24-%E0%A6%B9%E0%A7%9F-%E0%A6%A4%E0%A6%AC%E0%A7%87-%24a-b-%24 Algebra https://qnafy.com/14055/%E0%A6%AF%E0%A6%A6%E0%A6%BF-%24-log-left-frac-ab-right-log-left-frac-ba-right-log-left-a-b-right-%24-%E0%A6%B9%E0%A7%9F-%E0%A6%A4%E0%A6%AC%E0%A7%87-%24a-b-%24 Thu, 19 Jun 2025 12:06:27 +0000 $2^{\log_23+\log_25}$ এর মান কত? https://qnafy.com/13876/%242-log_23-log_25-%24-%E0%A6%8F%E0%A6%B0-%E0%A6%AE%E0%A6%BE%E0%A6%A8-%E0%A6%95%E0%A6%A4 Algebra https://qnafy.com/13876/%242-log_23-log_25-%24-%E0%A6%8F%E0%A6%B0-%E0%A6%AE%E0%A6%BE%E0%A6%A8-%E0%A6%95%E0%A6%A4 Tue, 17 Jun 2025 11:11:52 +0000 যদি $\log_{10}x=−1$ হয়, তাহলে নিচের কোনটি $x$ এর মান? https://qnafy.com/13072/%E0%A6%AF%E0%A6%A6%E0%A6%BF-%24-log_-10-x-%E2%88%921%24-%E0%A6%B9%E0%A6%AF%E0%A6%BC-%E0%A6%A4%E0%A6%BE%E0%A6%B9%E0%A6%B2%E0%A7%87-%E0%A6%A8%E0%A6%BF%E0%A6%9A%E0%A7%87%E0%A6%B0-%E0%A6%95%E0%A7%8B%E0%A6%A8%E0%A6%9F%E0%A6%BF-%24x%24-%E0%A6%8F%E0%A6%B0-%E0%A6%AE%E0%A6%BE%E0%A6%A8 Algebra https://qnafy.com/13072/%E0%A6%AF%E0%A6%A6%E0%A6%BF-%24-log_-10-x-%E2%88%921%24-%E0%A6%B9%E0%A6%AF%E0%A6%BC-%E0%A6%A4%E0%A6%BE%E0%A6%B9%E0%A6%B2%E0%A7%87-%E0%A6%A8%E0%A6%BF%E0%A6%9A%E0%A7%87%E0%A6%B0-%E0%A6%95%E0%A7%8B%E0%A6%A8%E0%A6%9F%E0%A6%BF-%24x%24-%E0%A6%8F%E0%A6%B0-%E0%A6%AE%E0%A6%BE%E0%A6%A8 Sun, 08 Jun 2025 06:45:23 +0000 $2\log_{10}5+\log_{10}36-\log_{10}9=$ কত? https://qnafy.com/13063/%242-log_-10-5-log_-10-36-log_-10-9-%24-%E0%A6%95%E0%A6%A4 Algebra https://qnafy.com/13063/%242-log_-10-5-log_-10-36-log_-10-9-%24-%E0%A6%95%E0%A6%A4 Sat, 07 Jun 2025 15:36:15 +0000