FindInstance[1 == (c + d Sqrt[3]), {c, d}, Integers]
Why does this not return c = 1 and d = 0 in version 5.2?
It says that it can't find a solution.
Thank you. I see now that using the floating point clears it up.
In version 11.0.1 it does not give any solutions but it does say it can't solve it, and returns it back unevaluated.
If one changes Sqrt[3] to Sqrt[3.0] then it does return {{c -> 1, d -> 0}}
In[1]:= FindInstance[c + d Sqrt[3.] == 1, {c, d}, Integers] Out[1]= {{c -> 1, d -> 0}}
