Expression 1: "f" left parenthesis, "x" , right parenthesis equals Start integral from negative StartFraction, pi Over 2 , EndFraction to StartFraction, pi Over 2 , EndFraction , end integral, StartFraction, "x" squared sin left parenthesis, 2 "t" , right parenthesis Over StartRoot, 1 plus "x" squared plus 2 "x" sin left parenthesis, "t" , right parenthesis , EndRoot , EndFraction "d" "t" left brace, negative 1 less than "x" less than 1 , right bracefx=∫π2−π2x2sin2t1+x2+2xsintdt−1<x<1
1
Expression 2: "y" equals negative 4 thirds "x" cubed left brace, negative 1 less than "x" less than 1 , right bracey=−43x3−1<x<1