HP 33S - Page 222

15–2 Mathematics Programs
File name 33s-E-Manual-1008-Publication(1st).doc Page : 386
Printed Date : 2003/10/8 Size : 13.7 x 21.2 cm
Vector addition and subtraction:
v
1
+ v
2
= (X + U)i + (Y + V)j + (Z + W)k
v
2
– v
1
= (U – X)i + (V – Y)j + (W – Z)k
Cross product:
v
1
×
v
2
= (YW – ZV )i + (ZU – XW)j + (XV – YU)k
Dot Product:
D = XU + YV + ZW
Angle between vectors (
γ
):
G = arccos
2
1
RR
D
×
where
v
1
= X i + Y j + Z k
and
v
2
=U i + V j + W k
The vector displayed by the input routines (LBL P and LBL R) is V
1
.