Expression 2: StartAbsoluteValue, ln left parenthesis, "c" , right parenthesis "c" Superscript, negative StartFraction, "W" Subscript, 0 , Baseline left parenthesis, negative ln left parenthesis, "c" , right parenthesis , right parenthesis Over ln left parenthesis, "c" , right parenthesis , EndFraction , Baseline , EndAbsoluteValue less than 1lncc−W0−lnclnc<1
2
Expression 3: "c" equals "x" plus "y" "i"c=x+yi
3
Expression 4: "W" Subscript, 0 , Baseline left parenthesis, "z" , right parenthesis equals StartFraction, 1 Over pi , EndFraction Start integral from 0 to pi , end integral, natural log left parenthesis, 1 plus StartFraction, "z" sin left parenthesis, "t" , right parenthesis Over "t" , EndFraction "e" Superscript, "t" cot left parenthesis, "t" , right parenthesis , Baseline , right parenthesis "d" "t"W0z=1π∫π0ln1+zsinttetcottdt