II. Menu Keys - Keys that offer choices

F. VECTR

A vector on the TI-86 is a one-dimensional array that can be arranged in either one row or one column with real or complex elements. When you create a vector it is stored to the name you give it.

It is unlikely you will work with vectors in algebra or trigonometry. You may work with elementary vectors in a precalculus class. In this section we will look at a few basic vector operations.

Example: Create two vectors LSU=<-3,2,-1> and TIGERS=<5,-2,4>. Find the dot product and the cross product of the two vectors. Find the unit vector for LSU and the normal vector for TIGERS.

 Press type LSU, press Change dimension to 3 and enter the values. Clear the screen. Press . Press type TIGERS, press Change dimension to 3 and enter the values. Clear the screen. Press . Press and to find the dot product. Access the names. . The dot product is -23. Press . Access the names. . The cross product is the vector <6,7,-4>. Clear the screen. Press . Press to find the unit vector. Press to find the normal vector. Remember: Dot product=value Cross Product=vector.

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