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README.md

@@ -63,7 +63,7 @@ y^{end}=y^{start} \\
 
 ### Objective Function
 
-1. First objective: maximize height $h'$ to push it to go up, got the max $x'$
+1. First objective: maximize height $`h'`$ to push it to go up, got the max $`x'`$
 2. Then I added to the constraints:
     ```math
     apex \ height = h' \\