# Dot Product - HP 35s User Manual

Scientific calculator.

## Dot product

Function DOT is used to calculate the dot product of two vectors with the same
length. Attempting to calculate the dot product of two vectors of different length
causes an error message " ".
For 2-D vectors: [A, B], [C, D], dot product is defined as [A, B] [C, D]= A x C +B x
D.
For 3-D vectors: [A, B, X], [C, D,Y], dot product is defined as [A, B, X] [C, D, Y]= A
x C +B x D+X x Y
1.
Enter the first Vector
2.
Press
3.
Enter the second vector
4.
Press
Note: The sign,
product, see chapter 17.
Calculate the dot product of two vectors, [1,2] and [3,4]
Keys:
9
()
3
Õ
3

Calculate the dot product of two vectors, [9,5] and [2.2]
Keys:
9
()
3
3
10-4
Vector Arithmetic
,here means "dot product" instead of "cross product". For cross
Display:
_


Display:




Description:
Switches to ALG mode
Enters the first vector [1,2]

Executes
for dot product,
and enters the second vector
The dot product of two
vectors is 11
Description:
Switches to RPN mode
Enters the first vector [9,5]
and enters the second vector
[2,2]  