表达式4: "S" left parenthesis, "x" , right parenthesis equals StartFraction, sin left parenthesis, pi "x" , right parenthesis Over pi "x" , EndFractionSx=sinπxπx
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表达式5: "S" left parenthesis, "x" , right parenthesis squaredSx2
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表达式6: "G" left parenthesis, "x" , right parenthesis times "S" left parenthesis, "x" , right parenthesis squaredGx·Sx2
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表达式7: "S" left parenthesis, "x" , right parenthesis "S" left parenthesis, StartFraction, "x" Over 2 , EndFraction , right parenthesis 有图表。 要进行音频跟踪,按“Alt 键 + T”。SxSx2
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表达式8: "S" left parenthesis, "x" , right parenthesis "S" left parenthesis, StartFraction, "x" Over 3 , EndFraction , right parenthesisSxSx3