If a > 0 then int_(2a)^(a^2)1/xdx=?
RUUnit-FSet-2উচ্চতর গণিত প্রথম পত্রযোগজীকরণF'(x)/F(x) সংক্রান্ত (Topic Practice)RU - ⚡ অনলাইন প্রশ্নব্যাংক দেখুন 💥
সঠিক উত্তরঃ
A.
log_efrac(a)2
Explanation:

Another Explanation (5): ```html
Let \(I = \int_{2a}^{a^2} \frac{1}{x} dx\). Given \(a > 0\).
We know that \(\int \frac{1}{x} dx = \ln |x| + C\).
So, \(I = \left[ \ln |x| \right]_{2a}^{a^2} = \ln |a^2| - \ln |2a|\)
Since \(a > 0\), we have \(|a^2| = a^2\) and \(|2a| = 2a\).
Therefore, \(I = \ln (a^2) - \ln (2a)\).
Using the property of logarithms, \(\ln(x) - \ln(y) = \ln(\frac{x}{y})\), we get:
\(I = \ln \left( \frac{a^2}{2a} \right)\)
\(I = \ln \left( \frac{a}{2} \right)\)
\(I = \log_e \left( \frac{a}{2} \right)\)
So, \(\int_{2a}^{a^2} \frac{1}{x} dx = \log_e \frac{a}{2}\). 😊
```