Explanation: 
Another Explanation (5):
দেওয়া আছে, \(y = x^2 \ln x\)
প্রথম অন্তরকলন,
\[ \frac{dy}{dx} = \frac{d}{dx} (x^2 \ln x) = x^2 \cdot \frac{1}{x} + \ln x \cdot 2x = x + 2x \ln x \]
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দ্বিতীয় অন্তরকলন,
\[ \frac{d^2y}{dx^2} = \frac{d}{dx} (x + 2x \ln x) = 1 + 2(x \cdot \frac{1}{x} + \ln x \cdot 1) = 1 + 2(1 + \ln x) = 3 + 2 \ln x \]
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তৃতীয় অন্তরকলন,
\[ \frac{d^3y}{dx^3} = \frac{d}{dx} (3 + 2 \ln x) = 0 + 2 \cdot \frac{1}{x} = \frac{2}{x} \]
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অতএব, \(\frac{d^3y}{dx^3} = \frac{2}{x}\)