diff --git a/KFY FYI1/Priklad01.md b/KFY FYI1/Priklad01.md
index 5b74b92..03b876f 100644
--- a/KFY FYI1/Priklad01.md
+++ b/KFY FYI1/Priklad01.md
@@ -35,7 +35,7 @@ pro $t = T$
**Dráha**
-$\displaystyle s = \frac{1}{2}\cancel{a_{t}} \cdot \frac{(v_{1} - v_{2})^T}{a_{t}^{\cancel{2}}} + v_{0} \cdot \frac{v_{1} - v_{0}}{a_{t}} = \frac{v_{1}^2 - 2v_{1}v_{0} + v_{0}^2}{2a_{t}} + \frac{v_{0}v_{1} - v_{0}^2}{a_{t}} = \frac{v_{1}^2 - \cancel{2v_{1}v_{0}} + \cancel{v_{0}^2} + \cancel{2v_{1}v_{0}} - \cancel{2}v_{0}^2}{2a_{t}} = \frac{v_{1}^2 - v_{0}^2}{2a_{t}}$
+$\displaystyle s = \frac{1}{2}\cancel{a_{t}} \cdot \frac{(v_{1} - v_{2})^2}{a_{t}^{\cancel{2}}} + v_{0} \cdot \frac{v_{1} - v_{0}}{a_{t}} = \frac{v_{1}^2 - 2v_{1}v_{0} + v_{0}^2}{2a_{t}} + \frac{v_{0}v_{1} - v_{0}^2}{a_{t}} = \frac{v_{1}^2 - \cancel{2v_{1}v_{0}} + \cancel{v_{0}^2} + \cancel{2v_{1}v_{0}} - \cancel{2}v_{0}^2}{2a_{t}} = \frac{v_{1}^2 - v_{0}^2}{2a_{t}}$
**Doba jízdy**
diff --git a/KFY FYI1/Priklad12.md b/KFY FYI1/Priklad12.md
index 56f62ff..6bd7570 100644
--- a/KFY FYI1/Priklad12.md
+++ b/KFY FYI1/Priklad12.md
@@ -22,7 +22,7 @@ pro optické rozhraní 2 platí
### Výpočet
vztah mezi úhly $\gamma$ a $\beta$ - viz. pravoúhlý trojúhelník
-- $\beta = \frac{\pi}{2} - \gamma \implies \sin \beta = \sin (\frac{\pi}{2}) = \cos \gamma$
+- $\beta = \frac{\pi}{2} - \gamma \implies \sin \beta = \sin \left(\frac{\pi}{2} - \gamma\right) = \cos \gamma$
určení numerické apertury
- $\sin \alpha_{m} = n_{1} \cdot \sin \beta = n_{1} \cdot \cos \gamma =$
diff --git a/KFY FYI1/_assets/priklad12.svg b/KFY FYI1/_assets/priklad12.svg
index 2f59930..ac1f39a 100644
--- a/KFY FYI1/_assets/priklad12.svg
+++ b/KFY FYI1/_assets/priklad12.svg
@@ -1,4 +1,4 @@
-
\ No newline at end of file
+
\ No newline at end of file