Expression 4: 4 greater than "y" greater than max left parenthesis, "f" left parenthesis, "x" , right parenthesis , 3 , right parenthesis left brace, 0 less than "x" less than 2 , right brace Has graph. To audio trace, press ALT+T.4>y>maxfx,30<x<2
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Definite integral is blue area
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Expression 6: "t" equals Start integral from 1 to 2, end integral, "f" left parenthesis, "x" , right parenthesis "d" "x" equals 3.6 3 6 6 1 9 7 7 2 3 7t=∫21fxdx