Update cheatsheet_limits.md

cheatsheet_limits.md

@@ -31,7 +31,7 @@ If you got $\frac{0}{0}$, the limit *does* exist, but it is hiding in disguise.
 ### Step 3: Handling $\frac{\text{Number}}{0}$ (Vertical Asymptotes)
 If you get a normal number divided by zero, the graph is exploding to infinity or negative infinity. The overall limit **Does Not Exist (DNE)**, but your professor usually wants to know *which direction* it is exploding.
 
-* **The Tactic:** Pick a decimal slightly to the left (e.g., $1.99$) and slightly to the right (e.g., $2.01$) of your target $x$-value.
+* **The Tactic:** Pick a decimal slightly to the left (e.g., $1.99$) and slightly to the right (e.g., $2.01$) of your target **x-value**.
 * **The Goal:** You don't care about the exact number; you only care about the **Sign**.
     * If both sides equal a massive positive number, the answer is $\infty$.
     * If both sides equal a massive negative number, the answer is $-\infty$.