Solution 12042: Algorithm for Summation on the TI-89 Family, TI-92 Family, and Voyage™ 200 Graphing Calculators.
How are Summations calculated on the TI-89 family, TI-92 family, and Voyage 200 graphing calculators?
The following the example will demonstrate how to use and compute summations using the TI-89 family, TI-92 family, and Voyage 200 graphing calculators.
The syntax for the å ( function, which is accessed by pressing [2nd] [MATH] [B] , is as follows:
å(expression, variable, lower limit, upper limit)
To find the sum of the sequence of 2x as x goes from 1 to 5, input the problem as follows:
and press [ENTER]. The answer is 62.
Please see the TI-89 family, TI-92 family and Voyage 200 guidebooks for additional information.