Khoi Anh Tran
New member
Cho tích phân \(I = \int\limits_{\sqrt 3 }^3 {\frac{1}{{{x^2} + 3}}dx} \). Khẳng định nào sau đây đúng?
A. \(I = \frac{{\sqrt 3 }}{3}\int\limits_{\frac{\pi }{4}}^{\frac{\pi }{3}} {dt} \)
B. \(I = \frac{{\sqrt 3 }}{3}\int\limits_{\frac{\pi }{4}}^{\frac{\pi }{3}} {tdt} \)
C. \(I = \sqrt 3 \int\limits_{\frac{\pi }{4}}^{\frac{\pi }{3}} {dt} \)
D. \(I = \frac{{\sqrt 3 }}{3}\int\limits_{\frac{\pi }{4}}^{\frac{\pi }{3}} {\frac{{dt}}{t}} \)
A. \(I = \frac{{\sqrt 3 }}{3}\int\limits_{\frac{\pi }{4}}^{\frac{\pi }{3}} {dt} \)
B. \(I = \frac{{\sqrt 3 }}{3}\int\limits_{\frac{\pi }{4}}^{\frac{\pi }{3}} {tdt} \)
C. \(I = \sqrt 3 \int\limits_{\frac{\pi }{4}}^{\frac{\pi }{3}} {dt} \)
D. \(I = \frac{{\sqrt 3 }}{3}\int\limits_{\frac{\pi }{4}}^{\frac{\pi }{3}} {\frac{{dt}}{t}} \)