You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser.
.....................********* ?[TEX]\-1 = (-1)^3 = (-1)^{\frac{6}{2}}=(-1)^{6.\frac{1}{2}} = \left [(-1)^6 \right ] ^{\frac{1}{2}}= [1]^{\frac{1}{2}}=\sqrt{1} = 1[/TEX]..
..sAi o dAu ??
.........*********