Expression 2: "g" left parenthesis, "x" , right parenthesis equals negative 0.5 "x" squared plus 2 "x" plus 1 Has graph. To audio trace, press ALT+T.gx=−0.5x2+2x+1
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Expression 3: pi Start integral from 0 to 3, end integral, left parenthesis, "g" left parenthesis, "x" , right parenthesis squared minus "f" left parenthesis, "x" , right parenthesis squared , right parenthesis "d" "x" equals 31.1 0 1 7 6 7 2 7 0 5π∫30gx2−fx2dx