Casio fx-991ES PLUS User Manual

• If you want to copy VctA, for example, perform the following key
operation: (VECTOR) (Data) (VctA).
• If you want to copy VctAns contents, perform the following to display
the VctAns screen: (VECTOR) (VctAns) .
2. Press (STO), and then perform one of the following key
operations to specify the copy destination: (VctA), (VctB), or
(VctC).
• This will display the Vector Editor with the contents of the copy
destination.
Vector Calculation Examples
The following examples use VctA = (1, 2) and VctB = (3, 4) from Example
1, and VctC = (2, -1, 2) from Example 2.
Example 3: 3 × VctA (Vector scalar multiplication), 3 × VctA - VctB
(Calculation example using VctAns)
3 (VECTOR) (VctA)
(VECTOR) (VctB)
Example 4: VctA • VctB (Vector dot product)
(VECTOR) (VctA)
(VECTOR) (Dot)
(VECTOR) (VctB)
Example 5: VctA × VctB (Vector cross product)
(VECTOR) (VctA)
(VECTOR) (VctB)
Example 6: Obtain the absolute values of VctC.
(Abs)
(VECTOR) (VctC)
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Casio fx-991ES PLUS Specifications

General

Type	Scientific
Cover	No
Form factor	Desktop
Control type	Buttons
Product color	Gray
Digits	15 digits
Display type	Dot-matrix
Display resolution	96 x 31 pixels
Display number of lines	10 lines
Storage media type	Not available
Battery life	3 year(s)
Battery type	LR44
Power source	Battery/Solar
Number of batteries supported	1
Symbolic notation	Square root
Conversion between	Decimal, Fraction, Percent
Convert angles from degrees to	Gradian, Radian
Random number/integer generator	Yes

Weight and Dimensions

Depth	162 mm
Width	80 mm
Height	11.1 mm
Weight	95 g