Question

VA ROG DACA DORITI SA MA AJUTATI SI PE MINE! !
Exercitiul 1 punctele a, b, c
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Answer 1

a)


$\it Re(z_1)=2,\ \ Im(z_1)=4$

$\it Re(z_2)=3,\ \ Im(z_2)=-4$

$\it Re(z_3)=7,\ \ Im(z_3)=0$

$\it Re(z_4)=0,\ \ Im(z_4)=2$

$\it Re(z_5)=3,\ \ Im(z_5)=-2$

$\it Re(z_6)=-1,\ \ Im(z_6)=1$

b)

$\it \overline{z_1} =2-4i$

$\it \overline{z_2} =3+4i$

$\it \overline{z_3} =7$

$\it \overline{z_4} =-2i$

$\it \overline{z_5} =3+2i$

$\it \overline{z_6} =-1-i$

c)

$\it |z_1| = \sqrt{2^2+4^2} =\sqrt{20} =\sqrt{4\cdot5}=2\sqrt5$

$\it |z_2| = \sqrt{3^2+4^2} =\sqrt{25} =5$

$\it |z_3| =|7| =7$

$\it |z_4| =\sqrt{2^2} =2$