The MTH/VECTOR menu

The MTH menu („´) contains a menu of functions that specifically to vector objects:

The VECTOR menu contains the following functions (system flag 117 set to CHOOSE boxes):

Magnitude

The magnitude of a vector, as discussed earlier, can be found with function ABS. This function is also available from the keyboard („Ê). Examples of application of function ABS were shown above.

Dot product

Function DOT (option 2 in CHOOSE box above) is used to calculate the dot product of two vectors of the same length. Some examples of application of function DOT, using the vectors A, u2, u3, v2, and v3, stored earlier, are shown next in ALG mode. Attempts to calculate the dot product of two vectors of different length produce an error message:

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