W|A = WolframAlpha
Thanks for the explanation! What does W|A mean?
Hey Michael, Thanks for your response.
So, are the roots the just values of the variables for which the given expression equals zero?
Yes, roots are obtained by setting the expression equal to zero. When you have many variables, there are usually several ways to express all the possible roots. W|A is showing one of them in the first "pod" (four lines; not sure why the 4th line gets an extra "Root" header).
