What's the result? $1/i=?$, where $i=\sqrt{-1}$ I just had my first math class in the university, and I understood everything pretty well, but I think I have misread this one because I read that the result is $-1$. Thanks for your answers!

by definition: $i\cdot i =-1$
by dividing by $i$, as in basic algebra: $i=-\frac{1}{i}$ and then $\frac{1}{i} =-i$
Cheers
