Expression 6: "I" Subscript, "m" , Baseline equals StartFraction, 1 Over pi , EndFraction Start integral from 0 to pi , end integral, theta Subscript, "z" , Baseline left parenthesis, 1 plus StartFraction, "x" sin left parenthesis, "u" , right parenthesis Over "u" , EndFraction "e" Superscript, "u" cot left parenthesis, "u" , right parenthesis , Baseline , StartFraction, "y" sin left parenthesis, "u" , right parenthesis Over "u" , EndFraction "e" Superscript, "u" cot left parenthesis, "u" , right parenthesis , Baseline , right parenthesis "d" "u"Im=1π∫π0θz1+xsinuueucotu,ysinuueucotudu