Can you calculate Pi using a Solver?

[EdS2]

Ah, always interesting to get some unexpected results - thanks everyone!

In some, then, we see a 'sigma' function being used to do most of the work, and the solver is only needing to cope with a simple transformation like reciprocal or square root. I hadn't realised a 'sigma' function might be to hand - of course these offerings are valid, for the machines which offer 'sigma'.

For the first submission, the iterative one posted by sliderule, is there a way to render this as a Solver problem?

Quote:We now have our iterative formula, S’ = √2r² - r√4r² - S²

Likewise, for the AGM method posted by Albert Chan, is there a way to get a Solver to do the work, rather than a program?