Casio fx-991EX Quick Start Manual page 18

VECTOR
Enter the components of the vector and press p after each
one to move to the next value.
To execute basic vector operations, press C to enter
Vector calculation.
Recall the names of the vectors and execute the desired
operation by pressing i.
Vector addition, subtractions, and multiplication are all available.
For subtraction, press 3(VctA)-i4(VctB)p.
For multiplication, press
i3(VctA)Oi4(VctB)p.
The sums of the product of the components of a vector
are known as the vector's dot product. So,
.
Press i3(VctA)iR2(Dot Product)i4(VctB)
p.
18 fx-991EX Quick Start Guide