Example 4 steps, run in order in one session. Every step was executed against the engine and the output below is what it produced.
rsqrt[x_] /; If[TrueQ[x ≥ 0], True, Message[rsqrt::nnarg, x];False] := Sqrt[x]No output - this step sets something up for the next one.
rsqrt::nnarg = "The argument `1` is not greater than or equal to zero.";No output - this step sets something up for the next one.
rsqrt[2.25]1.5rsqrt[-2.25]rsqrt[-2.25]All recipes · Function reference · Use this from an MCP client