ส่งงาน

week03/Chapter 03 Numerics and Error Analysis.ipynb

@@ -120,6 +120,26 @@
     "> ตัวเลขที่สามารถแปลงให้เป็นเลขฐานสองได้"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "'0b1010'"
+      ]
+     },
+     "execution_count": 1,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "bin(10)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {
@@ -235,6 +255,7 @@
    "cell_type": "code",
    "execution_count": 15,
    "metadata": {
+    "collapsed": true,
     "slideshow": {
      "slide_type": "skip"
     }
@@ -289,6 +310,7 @@
    "cell_type": "code",
    "execution_count": 26,
    "metadata": {
+    "collapsed": true,
     "slideshow": {
      "slide_type": "skip"
     }
@@ -336,6 +358,92 @@
     "$0.1 \\times 0.1 = 0.01 \\approx 0.0$ \n"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": 11,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "1.5\n"
+     ]
+    },
+    {
+     "data": {
+      "text/plain": [
+       "1.5"
+      ]
+     },
+     "execution_count": 11,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "v = [0 ,0,0,0,1, 1,0,0]\n",
+    "sign = -1 if v[0] == -1 else 1\n",
+    "value  = v[1]*2**3\n",
+    "value += v[2]*2**2\n",
+    "value += v[3]*2**1\n",
+    "value += v[4]*2**0\n",
+    "\n",
+    "value += v[5]*2**(-1)\n",
+    "value += v[6]*2**(-2)\n",
+    "value += v[7]*2**(-3)\n",
+    "\n",
+    "print(sign*value)\n",
+    "[(i,4-i) for i in range(1,8)]\n",
+    "[v[i]*2**(4-i)for i in range(1,8)]\n",
+    "sum([v[i]*2**(4-i)for i in range(1,8)])"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 29,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "1.375\n"
+     ]
+    }
+   ],
+   "source": [
+    "def value(v,p,n):\n",
+    "    sign = -1 if v[0] == 1 else 1\n",
+    "    \n",
+    "    return sign*sum([v[i]*2**(p-i)for i in range(1,(p+n+1))])\n",
+    "\n",
+    " \n",
+    "v = [0, 0,0,0,1, 0,1,1]\n",
+    "\n",
+    "print( value(v,4,3) )"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 26,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "1.375\n"
+     ]
+    }
+   ],
+   "source": [
+    " \n",
+    "v = [0, 0,0,0,1, 0,1,1]\n",
+    "\n",
+    "print( value(v,4,3) )\n"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {
@@ -472,7 +580,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.5.2"
+   "version": "3.6.1"
   }
  },
  "nbformat": 4,

week03/assignment.py

+def value(v,p,n):
+    	sign = -1 if v[0] == 1 else 1
+    
+    	return sign*sum([v[i]*2**(p-i)for i in range(1,(p+n+1))])
+
+ 
+	v = [0, 0,0,0,1, 0,1,1]
+
+	print( value(v,4,3) )
+