表达式4: StartFraction, "e" Superscript, negative StartNestedFraction, tan left parenthesis, "x" , right parenthesis squared NestedOver "m" squared , EndNestedFraction , Baseline Over pi "m" squared cos left parenthesis, "x" , right parenthesis to the 4th power , EndFraction left brace, negative StartFraction, pi Over 2 , EndFraction less than or equal to "x" less than or equal to StartFraction, pi Over 2 , EndFraction , right bracee−tanx2m2πm2cosx4−π2≤x≤π2
4
SG
对学生隐藏该文件夹。
5
表达式6: StartFraction, 1 Over pi "m" squared , EndFraction "e" Superscript, StartFraction, 2 left parenthesis, cos left parenthesis, "x" , right parenthesis minus 1 , right parenthesis Over "m" squared , EndFraction , Baseline left brace, negative StartFraction, pi Over 2 , EndFraction less than or equal to "x" less than or equal to StartFraction, pi Over 2 , EndFraction , right brace1πm2e2cosx−1m2−π2≤x≤π2
