MCQ · কৃষি গুচ্ছ সমন্বিত ভর্তি পরীক্ষা · ২০২৩
y = x³ ln x হলে d⁴y/dx⁴ এর মান হবে?
- কx²{1+3 ln(x)}
- খx {5 + 6 ln(x)}
- গ11 + 6 ln(x)
- ঘ6/x
সঠিক উত্তর: ঘ) 6/x
ব্যাখ্যা
y′ = 3x² ln x + x², y″ = 6x ln x + 5x, y‴ = 6 ln x + 11, y⁗ = 6/x।
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