Verified Double Integral Calculator on Rectangular Domain
Problem
z = 1 / (1 + x**2 + y**2)
python-like syntax
x, y: input, z: output
numeric constants pi, e, ln2 can be used
double quoted decimal string is converted to the interval including the value represented by the string
(startx)
(endx)
(starty)
(endy)
(number of partition)
(order)