[Computation - 15 seconds] State the value of  ["radical quantity pi over four, close quantity, times the integral from zero to infinity of ee to the minus ecks squared, dee ecks"], an improper, Gauss
[Computation - 15 seconds] State the value of  ["radical quantity pi over four, close quantity, times the integral from zero to infinity of ee to the minus ecks squared, dee ecks"], an improper, Gaussian integral. This is the same value as  ["the integral from zero to pi over two of sine of ecks dee ecks"] and of  ["the integral from one to ee of dee ecks over ecks"].
[Computation - 15 seconds] State the value of  ["radical quantity pi over four, close quantity, times the integral from zero to infinity of ee to the minus ecks squared, dee ecks"], an improper, Gaussian integral.
{1} (or {unity} or other equivalents)