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Expression 2: "g" left parenthesis, "x" , right parenthesis equals StartFraction, Start sum from "j" equals 1 to "n" , end sum, StartNestedFraction, "w" left parenthesis, "j" , right parenthesis NestedOver "x" minus "p" left bracket, "j" , right bracket , EndNestedFraction "f" left bracket, "j" , right bracket Over Start sum from "j" equals 1 to "n" , end sum, StartNestedFraction, "w" left parenthesis, "j" , right parenthesis NestedOver "x" minus "p" left bracket, "j" , right bracket , EndNestedFraction , EndFraction

2

Expression 3: "w" left parenthesis, "j" , right parenthesis equals Start product from "k" equals 1 to "n" , end product, StartFraction, 1 Over left brace, "j" equals "k" : 1 , "p" left bracket, "j" , right bracket minus "p" left bracket, "k" , right bracket , right brace , EndFraction

3

Expression 4: "n" equals length left parenthesis, "p" , right parenthesis

equals

5

4

5

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