RF Cafe Software
About RF Cafe
Copyright
1996 
2022
Webmaster:
Kirt Blattenberger,
BSEE
 KB3UON
RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...
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Unity  Elementary  Symmetric 
Diagonal Matrix with main diagonal elements = 1 
All elements = 0 except for a single 1 
Square Matrix with a_{ij} = a_{ji} 
Square  Diagonal  Null 
Same number of rows and columns 
Square Matrix with a_{ij} = 0 for all i_{¹} j 
All elements = 0 
Singular  
Value of determinant = 0 
Determinant 

Adjoint 
Square Matrix where aij is replaced with I, j cofactor multiplied by (1)i·j. Adjoint A = adj A 
Rank 
Rank of A = Rank of A'

Transpose 
Matrix where rows and columns are interchanged. Transpose A = A (A')' = A (kA)' = kA' (A+B)' = A'+B' (AB)' = B'A' 