HP 48GII

Full Command and Function Reference 3-55
EDITB
Type: Command
Description: Edit Best Command: Opens the specified object in the most suitable editor. For example, if you
use a matrix as the specified object, the command opens it in Matrix Writer.
Access: ˜
I
EDIT
Input/Output: None
See also: EDIT, VISIT
EGCD
CAS: From polynomials a and b, returns polynomials u, v, and c, where au+bv=c, c is the GCD of a & b.
EGV
Type: Command
Description: Eigenvalues and Eigenvectors Command: Computes the eigenvalues and right eigenvectors for a
square matrix.
The resulting vector EVal contains the computed eigenvalues. The columns of matrix EVec
contain the right eigenvectors corresponding to the elements of vector EVal.
The computed results should minimize (within computational precision):
A
EVec EVec dia
g
EVal()⋅
–
⋅
nA⋅
-------------------------------------------------------------------------------
where diag (EVal) denotes the n × n diagonal matrix containing the eigenvalues EVal.
Access: !Ø L
EIGENVECTOR EGV ( Ø is the left-shift of the 5key).
!´
MATRIX LEGV ( ´ is the left-shift of the Pkey).
Input/Output:
Level 1/Argument 1 Level 2/Item 1 Level 1/Item 2
[[matrix ]]
A
→
[[matrix ]]
EVec
[vector ]
EVal
See also: EGVL
EGVL
Type: Command
Description: Eigenvalues Command: Computes the eigenvalues of a square matrix.
The resulting vector L contains the computed eigenvalues.
Access: !Ø L
EIGENVECTOR EGVL ( Ø is the left-shift of the 5key).
!´
MATRIX LEGVL ( ´ is the left-shift of the Pkey).
Input/Output:
Level 1/Argument 1 Level 1/Item 1
[[matrix ]]
A
→
[vector ]
EVal
See also: EGV
ELSE
Type: Command
Description: ELSE Command: Starts false clause in conditional or error-trapping structure.
See the IF and IFERR keyword entries for more information.
Access: !°
BRANCH IF ELSE ( °is the left-shift of the Nkey).