diff --git a/notes/.obsidian/plugins/obsidian-activity-history/data.json b/notes/.obsidian/plugins/obsidian-activity-history/data.json
index 53fdb04..f51a85f 100644
--- a/notes/.obsidian/plugins/obsidian-activity-history/data.json
+++ b/notes/.obsidian/plugins/obsidian-activity-history/data.json
@@ -12,8 +12,8 @@
   "checkpointList": [
     {
       "path": "/",
-      "date": "2023-02-24",
-      "size": 973367
+      "date": "2023-03-02",
+      "size": 974036
     }
   ],
   "activityHistory": [
@@ -1111,6 +1111,14 @@
         {
           "date": "2023-02-24",
           "value": 643
+        },
+        {
+          "date": "2023-03-01",
+          "value": 0
+        },
+        {
+          "date": "2023-03-02",
+          "value": 669
         }
       ]
     }
diff --git a/notes/.obsidian/workspace.json b/notes/.obsidian/workspace.json
index f01ba31..9afd110 100644
--- a/notes/.obsidian/workspace.json
+++ b/notes/.obsidian/workspace.json
@@ -4,47 +4,22 @@
     "type": "split",
     "children": [
       {
-        "id": "3cb7511d20d754b0",
+        "id": "c4cf3f75c72f4cb2",
         "type": "tabs",
         "children": [
           {
-            "id": "d9eb311d93d8f113",
+            "id": "493912e1c66c4464",
             "type": "leaf",
             "state": {
               "type": "markdown",
               "state": {
-                "file": "fyz/Mechanika tekutin/Termodynamika/Tepelné děje Ideálního plynu.md",
-                "mode": "source",
-                "source": false
-              }
-            }
-          },
-          {
-            "id": "726155ca4a6decca",
-            "type": "leaf",
-            "state": {
-              "type": "markdown",
-              "state": {
-                "file": "cjl/cjl.md",
-                "mode": "source",
-                "source": false
-              }
-            }
-          },
-          {
-            "id": "570e22d9980a0f5c",
-            "type": "leaf",
-            "state": {
-              "type": "markdown",
-              "state": {
-                "file": "cjl/literatura/slohy/Romantismus/Příprava na test.md",
+                "file": "mat/Funkce/Cotangens.md",
                 "mode": "source",
                 "source": false
               }
             }
           }
-        ],
-        "currentTab": 2
+        ]
       }
     ],
     "direction": "vertical"
@@ -102,7 +77,7 @@
             "state": {
               "type": "backlink",
               "state": {
-                "file": "cjl/literatura/slohy/Romantismus/Příprava na test.md",
+                "file": "mat/Funkce/Cotangens.md",
                 "collapseAll": false,
                 "extraContext": false,
                 "sortOrder": "alphabetical",
@@ -119,7 +94,7 @@
             "state": {
               "type": "outgoing-link",
               "state": {
-                "file": "cjl/literatura/slohy/Romantismus/Příprava na test.md",
+                "file": "mat/Funkce/Cotangens.md",
                 "linksCollapsed": false,
                 "unlinkedCollapsed": true
               }
@@ -166,7 +141,7 @@
             "state": {
               "type": "outline",
               "state": {
-                "file": "cjl/literatura/slohy/Romantismus/Příprava na test.md"
+                "file": "mat/Funkce/Cotangens.md"
               }
             }
           },
@@ -241,18 +216,22 @@
       "breadcrumbs:Breadcrumbs Visualisation": false
     }
   },
-  "active": "570e22d9980a0f5c",
+  "active": "493912e1c66c4464",
   "lastOpenFiles": [
+    "mat/Funkce/Tangens.md",
+    "data/Pasted image 20230302110903.png",
+    "mat/mat.md",
     "cjl/cjl.md",
+    "fyz/Mechanika tekutin/Termodynamika/Tepelné děje Ideálního plynu.md",
+    "psi/CCNA2/Port security.md",
+    "psi/psi.md",
     "cjl/literatura/slohy/Romantismus/Příprava na test.md",
     "data/data.md",
     "fyz/fyz.md",
-    "fyz/Mechanika tekutin/Termodynamika/Tepelné děje Ideálního plynu.md",
     "cjl/literatura/slohy/Romantismus/Karel Hynek Mácha.md",
     "cjl/literatura/Tropy a figury.md",
     "mat/Funkce/Goniometrické funkce.md",
     "mat/Funkce/Příklady.md",
-    "mat/mat.md",
     "fyz/Mechanika tekutin/Termodynamika/Tepelné čerpadlo.md",
     "fyz/Mechanika tekutin/Termodynamika/Chladící stroj.md"
   ]
diff --git a/notes/data/Pasted image 20230302110903.png b/notes/data/Pasted image 20230302110903.png
new file mode 100644
index 0000000..4585ec9
Binary files /dev/null and b/notes/data/Pasted image 20230302110903.png differ
diff --git a/notes/mat/Funkce/Cotangens.md b/notes/mat/Funkce/Cotangens.md
index a505ea2..2aaa637 100644
--- a/notes/mat/Funkce/Cotangens.md
+++ b/notes/mat/Funkce/Cotangens.md
@@ -6,4 +6,37 @@ tags:
 # Cotangens
 $\cotg \alpha$
 Přilehlá strana ku protilehlé straně v pravoúhlém trojúhelníku.
-Převrácená hodnota [$\tg \alpha$](./Tangens.md) ($\frac{1}{\tg \alpha}$).
\ No newline at end of file
+Převrácená hodnota [$\tg \alpha$](./Tangens.md) ($\frac{1}{\tg \alpha}$).
+
+Zakázané osy: $k\pi; k\in\mathbb{Z}$
+
+$D_{\cotg}=\mathbb{R}\backslash\{k\pi;k\in\mathbb{Z}\}$
+$H_{\cotg}=\mathbb{R}$
+prostá není
+monotonie: klesající $(k\pi;\pi+k\pi) k\in\mathbb{Z}$
+parita: lichá
+omezená není
+extrémy nemá
+perioda: $\pi$
+průsečík:
+- osa Y - neexistuje
+- osa X - $[\frac\pi2+k\pi,k\in\mathbb{Z};0]$
+
+
+---
+
+Předpis funkce $y=\tg x$
+vyjádřete jako transformaci $\cotg x$
+
+$y=-\cotg(x+\frac\pi2)$
+
+---
+
+Popište transformaci ve funkci
+$y=3\tg(\frac{x}4+\frac\pi2)-2$
+
+“roztáhne” se podél Y 3x.
+posunutí o 2 $\downarrow$
+“splácnutí” podél X 4x.
+posunutí doleva o půl periody
+
diff --git a/notes/mat/Funkce/Tangens.md b/notes/mat/Funkce/Tangens.md
index 7d299bc..7a11af7 100644
--- a/notes/mat/Funkce/Tangens.md
+++ b/notes/mat/Funkce/Tangens.md
@@ -33,6 +33,12 @@ $\tan(x+k\pi)=\tan x$
 
 ve 3. kv. je $\frac--=+$
 
+
+![](Pasted%20image%2020230302110903.png)
+
+
+
+
 ---
 
 $x=\frac{\pi}4=45\degree$