Knowledge Base

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] [4], is as follows:

å(expression, variable, lower limit, upper limit)

Example:
To find the sum of the sequence of 2^x as x goes from 1 to 5, input the problem as follows:

å(2^x,x,1,5)

Please see the TI-89 family, TI-92 family and Voyage 200 guidebooks for additional information.