complex number

$$x=0$$

$$y=0$$

$$x\ne0$$

$$y\ne0$$

ไม่มีข้อใดถูก

$$i+1$$

$$-i-1$$

$$-i$$

$$i$$

ไม่มีข้อใดถูก

$$\sqrt[]{149}$$

$$149$$

$$2\ \sqrt[]{149}$$

$$7+10i$$

$$\sqrt[]{3}$$

5

15

25

$$\sqrt[]{5}$$

ไม่มีข้อใดถูก

$$(\cosθ+i\sinθ)$$

$$(\sinθ+i\cosθ)$$

$$r(\cosθ+i\sinθ)$$

$$r(\sinθ+i\cosθ)$$

ไม่มีข้อใดถูก

$$4\ \sqrt[]{2}\left(\cos\frac{5\pi}{3}+i\sin\frac{5\pi}{3}\right)$$

$$4\ \left(\cos\frac{5\pi}{6}+i\sin\frac{5\pi}{6}\right)$$

$$4\ \left(\cos\frac{5\pi}{3}+i\sin\frac{5\pi}{3}\right)$$

$$8\left(\cos\frac{5\pi}{6}+i\sin\frac{5\pi}{6}\right)$$

$$8\left(\cos\frac{5\pi}{3}+i\sin\frac{5\pi}{3}\right)$$

$$\frac{17}{2}\left(\cos\frac{3\pi}{2}+i\sin\frac{3\pi}{2}\right)$$

$$17\left(\cos\frac{3\pi}{2}+i\sin\frac{3\pi}{2}\right)$$

$$17\left(\cos\frac{3\pi}{4}+i\sin\frac{3\pi}{4}\right)$$

$$17\ \sqrt[]{2}\left(\cos\frac{5\pi}{4}+i\sin\frac{5\pi}{4}\right)$$

$$\frac{289}{4}\left(\cos\frac{3\pi}{8}+i\sin\frac{3\pi}{8}\right)$$

0

1

i

-i

-1

$$56cis\frac{28\pi}{9}$$

$$56cis\frac{7\pi}{6}$$

$$56cis\frac{49\pi}{27}$$

$$15cis\frac{28\pi}{9}$$

$$15cis\frac{49\pi}{27}$$

$$40cis\frac{92\pi}{63}$$

$$40cis\frac{44\pi}{63}$$

$$13cis\frac{92\pi}{63}$$

$$40cis\frac{4\pi}{21}$$

$$13cis\frac{4}{21}$$