Expression 4: "c" left parenthesis, "x" , right parenthesis equals negative "f" left parenthesis, mod left parenthesis, "x" plus pi , 2 pi , right parenthesis , right parenthesiscx=−fmodx+π,2π
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Expression 5: "d" left parenthesis, "x" , right parenthesis equals negative "f" left parenthesis, mod left parenthesis, negative "x" , 2 pi , right parenthesis , right parenthesisdx=−fmod−x,2π
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Expression 6: "g" left parenthesis, "x" , right parenthesis equals left brace, 0 less than or equal to mod left parenthesis, "x" , 2 pi , right parenthesis less than StartFraction, pi Over 2 , EndFraction : "a" left parenthesis, "x" , right parenthesis , StartFraction, pi Over 2 , EndFraction less than or equal to mod left parenthesis, "x" , 2 pi , right parenthesis less than pi : "b" left parenthesis, "x" , right parenthesis , pi less than or equal to mod left parenthesis, "x" , 2 pi , right parenthesis less than StartFraction, 3 pi Over 2 , EndFraction : "c" left parenthesis, "x" , right parenthesis , "d" left parenthesis, "x" , right parenthesis , right brace Has graph. To audio trace, press ALT+T.gx=0≤modx,2π<π2:ax,π2≤modx,2π<π:bx,π≤modx,2π<3π2:cx,dx
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Expression 7: sine left parenthesis, "x" , right parenthesis Has graph. To audio trace, press ALT+T.sinx