Fixed TeX error in solution

Author: paulvojta

OpenProblemLibrary/Indiana/Indiana_setIntegrals3Definite/s4_4_27.pg

@@ -70,8 +70,6 @@ done term-by-term by rewriting the integral as:
   \int_{$d1}^{$c1} \frac{{$a1}x^2 + $b1}{\sqrt{x}} dx = 
     \int_{$d1}^{$c1} \left( \frac{{$a1}x^2}{\sqrt{x}} + \frac{$b1}{\sqrt{x}}  \right) dx
 \]
-  
-\]
 Then, we can find the derivative, which is:
 \[
   F(x) =  \frac{2}{5}\left(\frac{{$a1}x^3}{\sqrt{x}}\right)