For given input matrix a, rotate it by 90 degrees and find the sum of the diagonals.
1 2 3 4
5 6 7 8
8 10 12 -2
-1 -3 -5 -7
Calculate the area of a triangle between three points
03 - Matrix Variables 3
07 - Common functions and indexing 3
Basic matrix operations using standard MATLAB commands
generate capital english alphabets
Check for keywords
Capitalized string operations
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