diff --git a/_posts/2024-12-21-System dynamics.md b/_posts/2024-12-21-System dynamics.md
index 238370b..dd79a92 100644
--- a/_posts/2024-12-21-System dynamics.md
+++ b/_posts/2024-12-21-System dynamics.md
@@ -30,8 +30,9 @@ math: true
#### 지수적 모형: 이상적 모델
- $$$$
$$\frac{dN}{dt} = kN \Rightarrow N(t) = N_0 e^{kt}$$
- ![Light mode only](https://i.ibb.co/0Q04w6h/image.webp){: .light }
- ![Dark mode only](https://i.ibb.co/crz8sWs/image.webp){: .dark }
+
+
@@ -40,8 +41,9 @@ math: true
$$\frac{dN}{dt}$$
$$= (B - D)N = (B_0 - D_0 N)N$$
$$= B_0 \left( 1 - \frac{D_0 N}{B_0} \right) N = r \left( 1 - \frac{N}{C} \right) N\ \Rightarrow N(t) = \frac{C N_0}{N_0 + (C - N_0)e^{-rt}}$$
- ![Light mode only](https://i.ibb.co/xfDBbHD/image.webp){: .light }
- ![Dark mode only](https://i.ibb.co/x3hpRwz/image.webp){: .dark }
+
+
- 한계