Expression 15: "D" left parenthesis, "x" , right parenthesis equals StartFraction, "x" Over "x" ! , EndFraction StartFraction, "d" Over "d" "x" , EndFraction left parenthesis, StartFraction, "x" ! Over "x" , EndFraction , right parenthesisDx=xx!ddxx!x
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Expression 16: gamma equals negative "D" left parenthesis, 1 , right parenthesisγ=−D1
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Expression 17: zeta Subscript, "r" , Baseline left parenthesis, 1 , .0 0 1 , right parenthesisζr1,.001
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Expression 18: zeta Subscript, "i" , Baseline left parenthesis, 1 , .0 0 1 , right parenthesisζi1,.001