alleryBy substitution u = x², ∫ 2x sin(x²) dx equals:
A-cos(x²) + C
B-sin(x²) + C
Ccos(x²) + C
Dsin(x²) + C
Answer & Solution
Correct answer: A. -cos(x²) + C
Let u = x², du = 2x dx.
Integral becomes ∫ sin u du = -cos u + C = -cos(x²) + C.
Keep practising Unit 6A: Indefinite Integrals & Fundamental Theorem
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