Improve display of inverse square roots.

corywalker · Nov 7, 2018 · e8d014f · e8d014f
1 parent 08ba3e0
commit e8d014f
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/expreduce/builtin_power.go b/expreduce/builtin_power.go
@@ -134,6 +134,16 @@ func getPowerDefinitions() (defs []Definition) {
 						return true, fmt.Sprintf("Sqrt[%v]", this.GetPart(1).StringForm(nextParams))
 					}
 				}
+				if atoms.IsSameQ(this.GetPart(2), atoms.NewRational(big.NewInt(-1), big.NewInt(2))) {
+					nextParams := params
+					nextParams.PreviousHead = "<TOPLEVEL>"
+					if params.Form == "TeXForm" {
+						return true, fmt.Sprintf("\\frac{1}{\\sqrt{%v}}", this.GetPart(1).StringForm(nextParams))
+					}
+					if params.Form == "InputForm" {
+						return true, fmt.Sprintf("(1/Sqrt[%v])", this.GetPart(1).StringForm(nextParams))
+					}
+				}
 			}
 			return toStringInfixAdvanced(this.GetParts()[1:], "^", "System`Power", false, "", "", params)
 		},