Expression 1: "y" equals 5 quarters left parenthesis, exp left parenthesis, negative StartFraction, "x" plus 1 Over pi , EndFraction , right parenthesis Superscript, pi , Baseline arctan left parenthesis, tan left parenthesis, pi "x" , right parenthesis , right parenthesis plus StartFraction, exp left parenthesis, negative "x" , right parenthesis Over 4 , EndFraction , right parenthesis Has graph. To audio trace, press ALT+T.y=54exp−x+1ππarctantanπx+exp−x4