表达式3: sine left parenthesis, 2 "x" minus StartFraction, pi Over 2 , EndFraction , right parenthesis left brace, 0 less than or equal to "x" less than or equal to 2 pi , right bracesin2x−π20≤x≤2π
3
表达式4: negative sine left parenthesis, 2 "x" , right parenthesis left brace, 0 less than or equal to "x" less than or equal to 2 pi , right brace−sin2x0≤x≤2π
4
表达式5: sine left parenthesis, "x" , right parenthesis plus 1 left brace, 0 less than or equal to "x" less than or equal to 2 pi , right bracesinx+10≤x≤2π
5
表达式6: sine left parenthesis, "x" , right parenthesis minus 1 left brace, 0 less than or equal to "x" less than or equal to 2 pi , right bracesinx−10≤x≤2π
