Răspuns:
z=-1-i
r=radical(-1)²+(-1)²
0=arctan(-1supra-1)
r=radical2
0=pisupra4
r=radical2
0=pisupra4+4
r=radical2
0=5pisupra4
z=r(cos(0)+i×sin(0))
z=radical2(cos(5pisupra4)+i×sin(5pisupra4))
z=1 supra2-i
r=radical (1 supra 2)²+(-1)²
0=arctan(-1supra 1totul supra2)
r=radical 5supra(2)
0=-arctan(2)
r=radical5supra2
0=-arctan(2)+2pi
z=r(cos(0)+i×sin(0))
z=radical5supra2(cos(-arctan(2)+2pi)+i×sin(-arctan(2)+2pi))