Knowledge Base

Solution 11727: Computing the Dot Product on the TI-89 Family, TI-92 Family, and Voyage™ 200 Graphing Calculators.

How do I calculate the dot product on the TI-89 family, TI-92 family and Voyage 200 graphing calculators?

The following instructions demonstrate how to compute the dot product using the TI-89 family, TI-92 family and Voyage 200.

Example: Find the dot product of vectors <11, 5> and <6, -8>

• Press [2ND] [MATH] [4].
• Press [ALPHA] [L] [3].

• Press [[] [1] [1] [,].
• Press[5] []] [,].
• Press [[] [6] [,].
• Press [(-)] [8] []].
• Press [)] [ENTER].

Note: Both vectors used with this command must be row vectors, or both must be column vectors. Both vectors must have equal dimension, and the dimension must be either 2 or 3.

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