Expression 4: "y" Subscript, 1 , Baseline less than "y" less than 1 left brace, "x" less than 0 , right brace Has graph. To audio trace, press ALT+T.y1<y<1x<0
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Expression 5: "y" Subscript, 1 , Baseline equals "e" Superscript, left parenthesis, "x" times beta , right parenthesis , Baseline left brace, "x" less than 0 , right bracey1=ex·βx<0
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Expression 6: 0 less than "y" less than "e" Superscript, left parenthesis, "x" times beta , right parenthesis , Baseline left brace, "x" less than 0 , right brace Has graph. To audio trace, press ALT+T.0<y<ex·βx<0
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Expression 7: "x" equals left bracket, 0 , 4 , 8 , right bracket Has graph. To audio trace, press ALT+T.x=0,4,8