This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
Let α be one of the solutions to this equation , then obviously − α will also be among the solutions .
∴ for every solution α i , there will be a corresponding solution − α i , hence the sum of roots evaluates to be 0 .