Table E2

Table E2 Estimating $π / 4$ by corrected partial sums
$n$	$\frac{(- 1)^{n}}{2 n + 1}$	partial sum	$\| π / 4 - partial sum \|$	$partial sum + \frac{1}{2} (next term)$	$\| error \|$
5	-0.0909	0.7440	0.0414
6
7
8
9
10