Thi thử trắc nghiệm ôn tập môn Toán cao cấp C1 online – Đề #17

A $\frac{1}{{\sqrt 7 }}\arcsin (\sqrt {\frac{7}{2}} x) + C$ B $\arcsin (\sqrt {\frac{7}{2}} x) + C$ C $\frac{1}{{\sqrt 3 }}\arcsin (\sqrt {\frac{2}{3}} x) + C$ D $\arcsin (\sqrt {\frac{2}{3}} x) + C$

A $\frac{1}{4}\arctan \frac{{{x^2}}}{4} + C$ B $\frac{1}{2}\arctan \frac{{{x^2}}}{2} + C$ C $\frac{1}{2}\arctan \frac{{{x^2}}}{4} + C$

A $\frac{\pi }{{12}}$ B $\frac{-\pi }{{12}}$ C $\frac{\pi }{{3}}$ D $\frac{\pi }{{6}}$

A $\frac{{44}}{{\ln 3}} - \frac{{16}}{{{{\ln }^2}3}}$ B 2 C 3 D $\frac{9}{{\ln 3}} - \frac{6}{{{{\ln }^2}3}}$

A $\sqrt 3 + 1$ B 3 C $\sqrt 3 $ D 4/3