hey, i wanna know step by step how sqrt(-2i) = sqrt(2)*e^(-i*pi/4) = (1-i)
is it necessary to change it to polar form first to get to 1-i ?
and when solving w^2= (-1+sqrt3 i)/2 how does the argument get tan^-1(-sqrt3)=2pi/3
shouldn´t it be tan^-1(-2sqrt3/2) if the formula for argument is arctan(y/x) ?
thnx