MCQ · কৃষি গুচ্ছ সমন্বিত ভর্তি পরীক্ষা · ২০২৪
∫₀^(π/2) dx/(1 + tan x) এর মান কত?
- কπ/2
- খ0
- গπ/4
- ঘπ/3
সঠিক উত্তর: গ) π/4
ব্যাখ্যা
I = ∫cos x/(sin x + cos x)dx এবং x → π/2 − x বসিয়ে 2I = π/2, তাই I = π/4।
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