What’s the same and what’s different about the following sums?
\(\displaystyle\sum_{r=0}^{n} r^2\)
\(\displaystyle\sum_{r=1}^{n} r^2\)
\(\displaystyle\sum_{r=0}^{n-1} (r+1)^2\)
What’s the same and what’s different about the following sums?
\(\displaystyle\sum_{r=0}^{n} r^2\)
\(\displaystyle\sum_{r=1}^{n} r^2\)
\(\displaystyle\sum_{r=0}^{n-1} (r+1)^2\)