HP 15C and INT(1/√(1-x),0,1)

[Dieter]

(01-08-2018 10:15 PM)Dieter Wrote:  I suspect that the error is caused by the 1/x instruction, and this may happen if x is so close to 1 that 1–x is evaluated to zero, which leads to an attempt to divide by zero. But this is just a guess. ;-)

I now tried the integrate function of Free42 Decimal 1.5.5. with a modified function that records the largest X during integration. For ACC=1E–8 (result: 1.99999596995) the largest X was 0,999999999956, i.e. 1–4,4E–11. With 10 digit precision this rounds to 1 so that 1–x becomes zero and 1/x generates an error.

But once again – try this on your 15C and see what you get.

Dieter