表达式3: "y" equals StartRoot, StartFraction, left parenthesis, 1 minus "x" squared , right parenthesis Over 1.5 squared "e" Superscript, 2 "x" ln 1.2 , Baseline , EndFraction , EndRooty=1−x21.52e2xln1.2
3
表达式4: "y" equals negative StartRoot, StartFraction, left parenthesis, 1 minus "x" squared , right parenthesis Over 1.5 squared "e" Superscript, 2 "x" ln 1.2 , Baseline , EndFraction , EndRooty=−1−x21.52e2xln1.2
4
表达式5: left parenthesis, cos left parenthesis, 2 pi "t" , right parenthesis StartRoot, StartFraction, left parenthesis, 1 minus left parenthesis, StartNestedFraction, "l" NestedOver 100 , EndNestedFraction , right parenthesis squared , right parenthesis Over 1.5 squared "e" Superscript, 2 left parenthesis, StartNestedFraction, "l" NestedOver 100 , EndNestedFraction , right parenthesis left parenthesis, ln 1.2 , right parenthesis , Baseline , EndFraction , EndRoot , StartFraction, 1 Over 100 , EndFraction sin left parenthesis, 2 pi "t" , right parenthesis plus StartFraction, "l" Over 100 , EndFraction , right parenthesiscos2πt1−l10021.52e2l100ln1.2,1100sin2πt+l100
定义域t最小值： 00
less than or equal to "t" less than or equal to≤t≤
定义域t最大值： 11
5
表达式6: "l" equals left bracket, negative 100...1 0 0 , right bracketl=−100...100
