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Analyze
Convert Data
  x^n
  add C
  multiply C
  expression
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  integrate
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  subtract line
  y(x)+y0(x)
  y(x)-y0(x)
  y(x)*y0(x)
  y(x)/y0(x)
  Fourier trans.
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[Analyze]-[Convert Data]
[special]-[integrate]

This item is to calculate a numerical integral of y with x. The trapezoid-approximation is used here. No option is available. The calculation is carried out immediately by clicking this button.