Fix typo.

Author: khof312

notes/K-Functions_shortened.ipynb

@@ -620,8 +620,8 @@
     "s1 = (-b + math.sqrt(b**2 - 4*a*c) )  / (2*a)       \n",
     "s2 = (-b - math.sqrt(b**2 - 4*a*c) )  / (2*a)       \n",
     "\n",
-    "print(f\"Solution 1: {x1:.3f}\")\n",
-    "print(f\"Solution 2: {x2:.3f}\")"
+    "print(f\"Solution 1: {s1:.3f}\")\n",
+    "print(f\"Solution 2: {s2:.3f}\")"
    ]
   },
   {