diff --git a/notes/.obsidian/plugins/obsidian-activity-history/data.json b/notes/.obsidian/plugins/obsidian-activity-history/data.json
index c3941a2..0074a08 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": "2022-02-15",
-      "size": 771285
+      "date": "2022-02-16",
+      "size": 772115
     }
   ],
   "activityHistory": [
@@ -39,6 +39,10 @@
         {
           "date": "2022-02-15",
           "value": 2380
+        },
+        {
+          "date": "2022-02-16",
+          "value": 830
         }
       ]
     }
diff --git a/notes/Osobnosti.md b/notes/Osobnosti.md
new file mode 100644
index 0000000..58d2411
--- /dev/null
+++ b/notes/Osobnosti.md
@@ -0,0 +1,4 @@
+# Osobnosti
+```dataviewjs
+dv.table(["Jméno", "Předmět", "Popis"], dv.pages("#osobnosti").sort(u => u.name).map(u => ["[" + u.file.name + "](./" + encodeURI(u.file.path) + ")", u.tags[0], u.desc]))
+```
\ No newline at end of file
diff --git a/notes/mat/Rovnice.md b/notes/mat/Rovnice.md
index 9c55d8e..f94d64f 100644
--- a/notes/mat/Rovnice.md
+++ b/notes/mat/Rovnice.md
@@ -3,6 +3,12 @@ tags:
   - mat
 ---
 # Rovnice
+## Úpravy
+```ad-sentence
+$+;-$ libovolnou hodnotu nebo výraz
+$*;:$ libovolnou hodnotu nebo výraz ***kromě 0***
+```
+
 ## Lineární
 $y = ax + b$
 ![](Pasted%20image%2020211112103252.png)
@@ -13,4 +19,63 @@ $y = ax^2 + bx + c$
 $x^2-x-2=0$
 $-(x_1+x_2)=0$
 $x_1*x_2=2$
-$x_1 = -1$ ; $x_2 = 2$
\ No newline at end of file
+$x_1 = -1$ ; $x_2 = 2$
+
+
+
+---
+$$x-\frac{1-\frac{3x}2}4-\frac{2-\frac{x}4}3=2$$
+$$
+12x-3(1-\frac{3x}2)-4(2-\frac{x}4)=24
+$$
+$$
+12x-3+\frac{9x}2-8+\frac{4x}4=24
+$$
+$$
+21x+\frac12x=35 \space |*2
+$$
+$$
+43x=70
+$$
+??? je to špatně
+
+---
+
+
+
+$$-2x-\frac72 = x-\frac32(2x+3)+1$$
+$$
+-4x-7=2x-3(2x+3)+2
+$$
+$$
+-4x-7=2x-6x-9+2
+$$
+$$
+-4x-7=-4x-7
+$$
+$$
+x=x
+$$
+---
+
+$$
+x-\frac{\frac{2x-3}3}2 = 1 +2x
+$$
+$$
+2x-\frac{2x-3}3 = 2+4x
+$$
+$$
+6x-2x-3=6+12x
+$$
+$$
+4x=9+12x
+$$
+$$
+-8x=9
+$$
+$$
+x=-\frac98
+$$
+prej špatně??
+
+---
diff --git a/notes/notes.md b/notes/notes.md
index 8c1a68d..5933b5c 100644
--- a/notes/notes.md
+++ b/notes/notes.md
@@ -16,6 +16,7 @@ noteOnly: true
 -  [[har/har|har]]
 -  [[kbb/kbb|kbb]]
 -  [[mat/mat|mat]]
+-  [[Osobnosti|Osobnosti]]
 -  [[pdv/pdv|pdv]]
 -  [[preamble.sty|preamble.sty]]
 -  [[projects/projects|projects]]