Section 5.1 Examples
            
          
      
      
      
      
      1.  Estimate the area under the curve \( f(x)=\frac{1}{2}x^2 +2x+2 \) from \( x=-4\) to \( x=2\)  using 3 approximating rectangles and right endpoints.  
         Solution
      2. Estimate the area under the curve \( f(x)=\frac{1}{2}x^2 +2x+2 \) from \( x=-4\) to \( x=2\)  using 3 approximating rectangles and left endpoints. 
         Solution
      
      3. Estimate the area under the curve \( f(x)=\frac{1}{2}x^2 +2x+2 \) from \( x=-4\) to \( x=2\)  using 3 approximating rectangles and midpoints. 
           Solution