Expression 3: 0 less than or equal to "y" less than or equal to StartFraction, 1 Over 1 plus "x" , EndFraction "x" "e" Superscript, negative "n" "x" , Baseline left brace, 0 less than or equal to "x" less than or equal to 1 , right brace0≤y≤11+xxe−nx0≤x≤1
3
Expression 4: "y" equals "x" "e" Superscript, negative "n" "x" , Baseliney=xe−nx
4
Expression 5: 0 less than or equal to "y" less than or equal to "x" "e" Superscript, negative "n" "x" , Baseline left brace, 0 less than or equal to "x" less than or equal to 1 , right brace0≤y≤xe−nx0≤x≤1