diff --git a/your-code/main.ipynb b/your-code/main.ipynb
index 2a08c31..28bee01 100644
--- a/your-code/main.ipynb
+++ b/your-code/main.ipynb
@@ -12,7 +12,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 1,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -33,9 +33,19 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 2,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Since -4 is negative the sqrt will be on the abs:\n",
+      "2.0\n",
+      "1.4142135623730951\n"
+     ]
+    }
+   ],
    "source": [
     "# Modify the code below to handle positive and negative numbers by adding an if statement and performing a transformation:\n",
     "\n",
@@ -50,17 +60,29 @@
     "    Sample Input: -4\n",
     "    Sample Output: 2.0\n",
     "    \"\"\"\n",
-    "    \n",
+    "    if x < 0:\n",
+    "        print(f'Since {x} is negative the sqrt will be on the abs:')\n",
+    "        return math.sqrt(abs(x))\n",
     "    return math.sqrt(x)\n",
     "\n",
-    "sqrt_for_all(-1)"
+    "print(sqrt_for_all(-4))\n",
+    "print(sqrt_for_all(2.0))"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 3,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "5.0\n",
+      "0\n"
+     ]
+    }
+   ],
    "source": [
     "# Modify the code below to handle zero as well. In the case of zero, return zero\n",
     "\n",
@@ -76,17 +98,28 @@
     "    Sample Input: 5, 1\n",
     "    Sample Output: 5.0\n",
     "    \"\"\"\n",
-    "    \n",
+    "    if y == 0:\n",
+    "        return 0\n",
     "    return x / y\n",
     "\n",
-    "divide(5, 0)"
+    "print(divide(5, 1))\n",
+    "print(divide(5, 0))"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 4,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[11]\n",
+      "[6, 7]\n"
+     ]
+    }
+   ],
    "source": [
     "# Modify the function below that it will take either an number and a list or two numbers. \n",
     "# If we take two numbers, add them together and return a list of length 1. \n",
@@ -105,10 +138,19 @@
     "    Sample Input: 5, 6\n",
     "    Sample Output: [11]\n",
     "    \"\"\"\n",
-    "    \n",
-    "    return [a + element for element in l]\n",
+    "\n",
+    "    # if type(l) == list:\n",
+    "    #     for element in l:\n",
+    "    #         new_list = a + element\n",
+    "    # else:\n",
+    "    #     a + l\n",
+    "    if type(l) == int:\n",
+    "        return [ a + l ]\n",
+    "    elif type(l) == list:\n",
+    "        return [ a + element for element in l]\n",
     "        \n",
-    "add_elements(5, 6)"
+    "print(add_elements(5, 6))\n",
+    "print(add_elements(5, [1,2]))"
    ]
   },
   {
@@ -122,29 +164,51 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 5,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "14"
+      ]
+     },
+     "execution_count": 5,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "# Modify the code below:\n",
     "\n",
     "l = [1,2,3,4]\n",
     "\n",
-    "sum([element + 1 for element in l]"
+    "sum([element + 1 for element in l])"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 6,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The current element in the loop is 1\n",
+      "The current element in the loop is 2\n",
+      "The current element in the loop is 3\n",
+      "The current element in the loop is 4\n"
+     ]
+    }
+   ],
    "source": [
     "# Modify the code below:\n",
     "\n",
     "l = [1,2,3,4]\n",
     "\n",
     "for element in l:\n",
-    "    print(\"The current element in the loop is\" + element)"
+    "    print(\"The current element in the loop is \" + str(element))"
    ]
   },
   {
@@ -158,9 +222,29 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 11,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "3.2188758248682006\n"
+     ]
+    },
+    {
+     "ename": "ValueError",
+     "evalue": "the number cannot be zero",
+     "output_type": "error",
+     "traceback": [
+      "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
+      "\u001b[1;31mValueError\u001b[0m                                Traceback (most recent call last)",
+      "\u001b[1;32m~\\AppData\\Local\\Temp\\ipykernel_1832\\3780661581.py\u001b[0m in \u001b[0;36m<module>\u001b[1;34m\u001b[0m\n\u001b[0;32m     19\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m     20\u001b[0m \u001b[0mprint\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mlog_square\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;36m5\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m---> 21\u001b[1;33m \u001b[0mprint\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mlog_square\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;36m0\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m",
+      "\u001b[1;32m~\\AppData\\Local\\Temp\\ipykernel_1832\\3780661581.py\u001b[0m in \u001b[0;36mlog_square\u001b[1;34m(x)\u001b[0m\n\u001b[0;32m     15\u001b[0m     \u001b[1;31m# Your code here:\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m     16\u001b[0m     \u001b[1;32mif\u001b[0m \u001b[0mx\u001b[0m \u001b[1;33m==\u001b[0m \u001b[1;36m0\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m---> 17\u001b[1;33m         \u001b[1;32mraise\u001b[0m \u001b[0mValueError\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;34m\"the number cannot be zero\"\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m     18\u001b[0m     \u001b[1;32mreturn\u001b[0m \u001b[0mmath\u001b[0m\u001b[1;33m.\u001b[0m\u001b[0mlog\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mx\u001b[0m\u001b[1;33m*\u001b[0m\u001b[0mx\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m     19\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n",
+      "\u001b[1;31mValueError\u001b[0m: the number cannot be zero"
+     ]
+    }
+   ],
    "source": [
     "def log_square(x):\n",
     "    \"\"\"\n",
@@ -176,14 +260,40 @@
     "    Sample Output: 3.21887\n",
     "    \"\"\"\n",
     "    \n",
-    "    # Your code here:"
+    "    # Your code here:\n",
+    "    if x == 0:\n",
+    "        raise ValueError(\"the number cannot be zero\")\n",
+    "    return math.log(x*x)\n",
+    "\n",
+    "print(log_square(5))\n",
+    "print(log_square(0))\n"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 8,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "True\n"
+     ]
+    },
+    {
+     "ename": "Exception",
+     "evalue": "The text does not have any capital",
+     "output_type": "error",
+     "traceback": [
+      "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
+      "\u001b[1;31mException\u001b[0m                                 Traceback (most recent call last)",
+      "\u001b[1;32m~\\AppData\\Local\\Temp\\ipykernel_1832\\3367815293.py\u001b[0m in \u001b[0;36m<module>\u001b[1;34m\u001b[0m\n\u001b[0;32m     19\u001b[0m \u001b[0mprint\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mcheck_capital\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;34m\"John\"\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m     20\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m---> 21\u001b[1;33m \u001b[0mprint\u001b[0m\u001b[1;33m(\u001b[0m\u001b[0mcheck_capital\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;34m\"john\"\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m",
+      "\u001b[1;32m~\\AppData\\Local\\Temp\\ipykernel_1832\\3367815293.py\u001b[0m in \u001b[0;36mcheck_capital\u001b[1;34m(x)\u001b[0m\n\u001b[0;32m     14\u001b[0m             \u001b[1;32mreturn\u001b[0m \u001b[1;32mTrue\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m     15\u001b[0m         \u001b[1;32melse\u001b[0m\u001b[1;33m:\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[1;32m---> 16\u001b[1;33m             \u001b[1;32mraise\u001b[0m \u001b[0mException\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;34m\"The text does not have any capital\"\u001b[0m\u001b[1;33m)\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m     17\u001b[0m     \u001b[1;31m# Your code here:\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m     18\u001b[0m \u001b[1;33m\u001b[0m\u001b[0m\n",
+      "\u001b[1;31mException\u001b[0m: The text does not have any capital"
+     ]
+    }
+   ],
    "source": [
     "def check_capital(x):\n",
     "    \"\"\"\n",
@@ -196,14 +306,22 @@
     "    Sample Input: 'John'\n",
     "    Sample Output: True\n",
     "    \"\"\"\n",
-    "    \n",
-    "    # Your code here:"
+    "    for letter in x:\n",
+    "        if letter.isupper():\n",
+    "            return True\n",
+    "        else:\n",
+    "            raise Exception(\"The text does not have any capital\")\n",
+    "    # Your code here:\n",
+    "\n",
+    "print(check_capital(\"John\"))\n",
+    "\n",
+    "print(check_capital(\"john\"))"
    ]
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3.7.4 64-bit",
    "language": "python",
    "name": "python3"
   },
@@ -217,7 +335,12 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.2"
+   "version": "3.7.4"
+  },
+  "vscode": {
+   "interpreter": {
+    "hash": "c438be70fe7b14fa31e78cfaf571a5f956365162ba67af6fb1eb95bac3223110"
+   }
   }
  },
  "nbformat": 4,