User Manual

2-52
u Complex Number Calculations with a Matrix
Example To determine the absolute value of a matrix with the following complex
number elements:
Matrix D =
AK6( g) 4(NUM) 1(Abs)
K2(MAT) 1(Mat) as (D) w
• The following complex number functions are supported in matrices and vectors.
i, Abs, Arg, Conjg, ReP, ImP
Matrix Calculation Precautions
• Determinants and inverse matrices are subject to error due to dropped digits.
• Matrix operations are performed individually on each cell, so calculations may require
considerable time to complete.
• The calculation precision of displayed results for matrix calculations is ± 1 at the least
significant digit.
• If a matrix calculation result is too large to fit into Matrix Answer Memory, an error occurs.
• You can use the following operation to transfer Matrix Answer Memory contents to another
matrix (or when Matrix Answer Memory contains a determinant to a variable).
MatAns → Mat
α
In the above, α is any variable name A through Z. The above does not affect the contents of
Matrix Answer Memory.
9. Vector Calculations
Important!
• Vector calculations cannot be performed on the fx-7400GIII.
To perform vector calculations, use the Main Menu to enter the RUN
•
MAT mode, and then
press 1('MAT)6(M↔V).
A vector is defined as a matrix that is either of the two following forms:
m (rows) × 1 (column)
or 1 (row) ×
n (columns).
The maximum allowable value that can be specified for both
m and n is 999.
You can use the 26 vector memories (Vct A through Vct Z) plus a Vector Answer Memory
(VctAns) to perform the vector calculations listed below.
• Addition, subtraction, multiplication
• Scalar multiple calculations
• Dot product calculations
• Cross product calculations
• Determination of the vector norm (size)
–1 +
i
1 +
i

1 +
i
–2 + 2
i