Expression 3: "c" equals exponent left parenthesis, StartFraction, "a" Over 2 , EndFraction ln left parenthesis, "a" squared plus "b" squared , right parenthesis minus 2 "b" arctan left parenthesis, StartFraction, "b" Over "a" plus StartRoot, "a" squared plus "b" squared , EndRoot , EndFraction , right parenthesis , right parenthesis cosine left parenthesis, StartFraction, "b" Over 2 , EndFraction ln left parenthesis, "a" squared plus "b" squared , right parenthesis plus 2 "a" arctan left parenthesis, StartFraction, "b" Over "a" plus StartRoot, "a" squared plus "b" squared , EndRoot , EndFraction , right parenthesis , right parenthesisc=expa2lna2+b2−2barctanba+a2+b2cosb2lna2+b2+2aarctanba+a2+b2
equals=
44
3
Expression 4: "d" equals exponent left parenthesis, StartFraction, "a" Over 2 , EndFraction ln left parenthesis, "a" squared plus "b" squared , right parenthesis minus 2 "b" arctan left parenthesis, StartFraction, "b" Over "a" plus StartRoot, "a" squared plus "b" squared , EndRoot , EndFraction , right parenthesis , right parenthesis sine left parenthesis, StartFraction, "b" Over 2 , EndFraction ln left parenthesis, "a" squared plus "b" squared , right parenthesis plus 2 "a" arctan left parenthesis, StartFraction, "b" Over "a" plus StartRoot, "a" squared plus "b" squared , EndRoot , EndFraction , right parenthesis , right parenthesisd=expa2lna2+b2−2barctanba+a2+b2sinb2lna2+b2+2aarctanba+a2+b2