表达式4: "h" left parenthesis, "x" , right parenthesis equals sine left parenthesis, "a" Subscript, 1 , Baseline pi "x" , right parenthesis "e" Superscript, negative .5 StartFraction, "x" squared Over "a" squared , EndFraction , Baselinehx=sina1πxe−.5x2a20
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表达式5: .2 "h" left parenthesis, "x" plus .5 , right parenthesis.2hx+.5
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表达式6: "a" Subscript, 1 , Baseline equals 40a1=40
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表达式7: "a" Subscript, 0 , Baseline equals 0.0 2 5a0=0.025
