diff --git a/README.md b/README.md
index e6fa77f..12ec99b 100644
--- a/README.md
+++ b/README.md
@@ -195,7 +195,7 @@ $$\lim_{x \to \infty} \frac{1}{x^2} = 0$$
 
 ## 2b) 
 
-$\lim_{x \to -\infty} \frac{1}{x^2}$
+$$\lim_{x \to -\infty} \frac{1}{x^2}$$