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Summation

Follow these steps to do a summation:

1. Press ctrl to open the Template palette.
   
   
2. Select to insert the algebraic sum template.
   
   
   1. The template appears on the entry line with small blocks representing elements that you can enter.

      A cursor appears next to one of the elements to show that you can type a value for that element.

3. Use the arrow keys to move the cursor to each element's position, and type a value or expression for each element.
   
   
4. Press enter to evaluate the expression.
   
   
   
   
   

Follow along with this example for doing a summation:

• To find the summation of n⁴/3 as n goes from 1 to 5, Press Home and then select the Calculator application.
  
  
• Press ctrl and then the multiplication key.
  
  
• Highlight the sum template and press enter.
  
  
  
  
• Starting in the bottom left hand dashed box, press n.
  
  
  
  
• Press the right arrow key to move to the next box, press the lower bound variable of one.
  
  
  
  
• Press the upper bound arrow key to enter the upper bound variable of five on top of the sigma notation.
  
  
  
  
• Press the down arrow key, to enter n4/3 in the dashed box in front of the sigma notation.
  
  
  
  
• Press enter to evaluate the expression.
  
  
  
  

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