Hi,
I was playing with the sum of the series 1/3, 1/9, 1/27 ..etc
(1÷3⋆⍳x), and found that If I'm using the rationals experimental
feature (⎕ps ← 1 0), then it the following were found:
1)
1÷3⋆⍳5
1÷3 1÷9 1÷27 1÷81 1÷243
+/1÷3⋆⍳39
2026277576509488133÷4052555153018976267
+/1÷3⋆
Adding other cases found
3⋆39
4052555153018976267
1÷3⋆39
1÷4052555153018976267
3⋆40
1.215766546E19
1÷3⋆40
8.22526334E¯20
Another example which does not have a large denumerator
(1÷3)×1÷3
1÷9
(1÷1)×1÷3
0.33
1×1÷3
0.33
2×1÷3
0.666
Hi Ala'a,
not sure what the problem is. What you see is probably a less-than-obvious
combination of APL2 formatting rules:
1. when the numerator and/or the denominator becomes larger than
64 bit, then
the quotient is automatically converted
