Add picture of datasheet to Discrete Control example

Author: alchemyst

2_Control/6_Discrete_control_and_analysis/Discrete control.ipynb

@@ -475,6 +475,13 @@
     "$F(z) = \\frac{K(1 - b)z^{-1}} {(1 - z^{-1})(1 - bz^{-1})}$"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "![](../../assets/z_transform_integrated_first_order.png)"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": 22,
@@ -819,9 +826,9 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.3"
+   "version": "3.7.6"
   }
  },
  "nbformat": 4,
- "nbformat_minor": 2
+ "nbformat_minor": 4
 }