Đề kiểm tra 15 phút Toán 12 Chương 4 Giải tích có đáp án (Đề 4)

A. $\frac{3\mathrm{\pi }}{10}+k2\mathrm{\pi }; \left(\mathrm{k}\in \mathrm{\mathbb{Z}}\right)$

B. $\frac{-3\mathrm{\pi }}{5}+k2\mathrm{\pi }; \left(\mathrm{k}\in \mathrm{\mathbb{Z}}\right)$

C. $\frac{-3\mathrm{\pi }}{10}+k2\mathrm{\pi }; \left(\mathrm{k}\in \mathrm{\mathbb{Z}}\right)$

D. $\frac{\mathrm{\pi }}{5}+k2\mathrm{\pi }; \left(\mathrm{k}\in \mathrm{\mathbb{Z}}\right)$

A. $\frac{\sqrt{2}}{2}\left(\cos \frac{-\mathrm{\pi }}{2}+i.\sin \frac{-\mathrm{\pi }}{2}\right)$

B. $\frac{\sqrt{2}}{2}\left(\cos \frac{-\mathrm{\pi }}{4}+i.\sin \frac{-\mathrm{\pi }}{4}\right)$

C. $\frac{\sqrt{2}}{2}\left(\cos \frac{\mathrm{\pi }}{4}+i.\sin \frac{\mathrm{\pi }}{4}\right)$

D. $\frac{\sqrt{2}}{2}\left(\cos \frac{\mathrm{\pi }}{2}+i.\sin \frac{\mathrm{\pi }}{2}\right)$

A. $\sqrt[4]{2}\left(\cos \frac{-\mathrm{\pi }}{8}+i.\sin \frac{-\mathrm{\pi }}{8}\right) và \sqrt[4]{2}\left(\cos \frac{7\mathrm{\pi }}{8}+i.\sin \frac{7\mathrm{\pi }}{8}\right)$

B. $\sqrt{2}\left(\cos \frac{\mathrm{\pi }}{4}+i.\sin \frac{\mathrm{\pi }}{4}\right)$

C. $\sqrt{2}\left(\cos \frac{-\mathrm{\pi }}{4}+i.\sin \frac{-\mathrm{\pi }}{4}\right)$

D. $\sqrt[4]{2}\left(\cos \frac{\mathrm{\pi }}{8}+i.\sin \frac{\mathrm{\pi }}{8}\right) và \sqrt[4]{2}\left(\cos \frac{-\mathrm{\pi }}{8}+i.\sin \frac{-\mathrm{\pi }}{8}\right)$

A. $2^{100}$

B. $2^{50}$

C. 0

D. $-2^{50}$

A. 0;-1.

B. 1;0.

C. -1;0

D. 0;1.