MCQ · কৃষি গুচ্ছ সমন্বিত ভর্তি পরীক্ষা · ২০২৪
y = tan⁻¹(ax) হলে dy/dx এর মান কত?
- ক1/(1+ax²)
- খa/(1+a²x²)
- গ1/(1+x²)
- ঘকোনটিই নয়।
সঠিক উত্তর: খ) a/(1+a²x²)
ব্যাখ্যা
শৃঙ্খল নিয়মে dy/dx = a/(1 + a²x²)।
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