text: Find trace of matrix formed by adding Row | Return sum of first n integers of an AP ; Return the trace of sum of row - major matrix and column - major matrix ; Finding nth element in AP in case of Row major matrix . ; Finding sum of first n integers of AP in case of Row major matrix ; Finding nth element in AP in case of Row major matrix ; Finding sum of first n integers of AP in case of Column major matrix ; Driver Code
code: def sn ( n , an ) : NEW_LINE INDENT return ( n * ( 1 + an ) ) / 2 ; NEW_LINE DEDENT def trace ( n , m ) : NEW_LINE INDENT an = 1 + ( n - 1 ) * ( m + 1 ) ; NEW_LINE rowmajorSum = sn ( n , an ) ; NEW_LINE an = 1 + ( n - 1 ) * ( n + 1 ) ; NEW_LINE colmajorSum = sn ( n , an ) ; NEW_LINE return int ( rowmajorSum + colmajorSum ) ; NEW_LINE DEDENT N = 3 ; NEW_LINE M = 3 ; NEW_LINE print ( trace ( N , M ) ) ; NEW_LINE