\frac{1}{2}i" alt=" \sqrt[3]{1}=?\\\\1=1+0i\\|1|= \sqrt{1^2+0^2}= \sqrt{1}=1\\(cos \alpha =1/|1|=1/1=1;
sin \alpha = 0/|1|=0/1=0) =\ \textgreater \ \alpha =2\pi \\\\ \sqrt[3]{1}= \sqrt[3]{|1|}(cos \frac{ 2\pi+2\pi k }{3}+i sin\frac{ 2\pi +2\pi k }{3})\; \; \; \; \; k=0,1,2\\\\1) k=0\\\; \; \; x_1=1(cos \frac{2\pi }{3}+isin \frac{2\pi }{3})=- \frac{\sqrt{3} }{2}+
\frac{1}{2}i" align="absmiddle" class="latex-formula">