Expression 1: 2exponent left parenthesis, negative mod left parenthesis, negative StartFraction, floor left parenthesis, "x" times 10 , right parenthesis Over 10 , EndFraction , 2 , right parenthesis , right parenthesis Has graph. To audio trace, press ALT+T.2exp−mod−floorx·1010,2
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Expression 2: mod left parenthesis, StartFraction, floor left parenthesis, "x" times 10 , right parenthesis Over 10 , EndFraction , 2 , right parenthesis Has graph. To audio trace, press ALT+T.modfloorx·1010,2