Expression 11: "b" left parenthesis, "x" , right parenthesis equals "p" Subscript, "s" , Baseline StartFraction, 1 minus left parenthesis, 1 plus "r" Subscript, "s" , Baseline , right parenthesis Superscript, left parenthesis, "x" minus "t" Subscript, "s" , Baseline , right parenthesis , Baseline Over "r" Subscript, "s" , Baseline , EndFraction Has graph. To audio trace, press ALT+T.bx=ps1−1+rsx−tsrs
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Expression 12: "k" left parenthesis, "x" , right parenthesis equals "b" left parenthesis, 0 , right parenthesis minus "b" left parenthesis, "x" , right parenthesis Has graph. To audio trace, press ALT+T.kx=b0−bx
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Expression 13: "i" left parenthesis, "x" , right parenthesis equals "x" "p" Subscript, "s" , Baseline minus "k" left parenthesis, "x" , right parenthesis Has graph. To audio trace, press ALT+T.ix=xps−kx
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Expression 14: "i" Subscript, "y" , Baseline left parenthesis, "j" , right parenthesis equals "i" left parenthesis, "j" "s" Subscript, "y" , Baseline , right parenthesis minus "i" left parenthesis, left parenthesis, "j" minus 1 , right parenthesis "s" Subscript, "y" , Baseline , right parenthesis Has graph. To audio trace, press ALT+T.iyj=ijsy−ij−1sy
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Expression 15: "a" left parenthesis, "j" , right parenthesis equals StartFraction, "i" Subscript, "y" , Baseline left parenthesis, "j" , right parenthesis Over "b" left parenthesis, left parenthesis, "j" minus 1 , right parenthesis "s" Subscript, "y" , Baseline , right parenthesis , EndFraction Has graph. To audio trace, press ALT+T.aj=iyjbj−1sy