Hp 48g Graphing Calculator Uživatelský manuál Strana 161

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Additional commands for manipulating vectors and elements of vectors
are covered in chapter 14.
Examples: Calculating with 2D and 3D Vectors
To calculate with vectors:
Enter the vectors on the stack, then execute the command.
Example: Finding the Unit Vector. A unit vector parallel to a given
vector is found by dividing a vector by its magnitude:
V
n = 7--
13
1. Enter the vector.
2. Duplicate the vector (press (ENTER) a second time).
3. Press fMTH] VECTR HE'S to compute the magnitude of the
vector.
4. Press (T) to divide the vector by its magnitude to get the unit
vector.
Example: Finding the Angle between Vectors. The angle between
two vectors is given by
angle
,-i
VI V2
Wn |V2|
1. Enter the two vectors onto the stack.
2. Press (MTH) VECTR DOT to take the dot (inner) product.
3. Press (S(aMD to return the two vectors to the stack.
4. Press HBS (SWAP) HES to find the magnitude of each
vector.
5. Press (2 to multiply the magnitudes.
6. Press
0
to divide the product of the magnitudes into the dot
product.
7. Press f^iACOS) to find the angle between the vectors.
Vectors and Transforms 13-5
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