Expression 3: left parenthesis, mod left parenthesis, "x" minus "d" , 2 "d" , right parenthesis minus "d" , right parenthesis squared plus left parenthesis, "y" minus sin left parenthesis, "p" , right parenthesis , right parenthesis squared equals 1 left brace, "y" greater than or equal to 0 , right brace Has graph. To audio trace, press ALT+T.modx−d,2d−d2+y−sinp2=1y≥0
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Expression 4: left parenthesis, mod left parenthesis, "x" minus 2cos left parenthesis, "p" , right parenthesis minus "d" , 2 "d" , right parenthesis minus "d" , right parenthesis squared plus left parenthesis, "y" plus sin left parenthesis, "p" , right parenthesis , right parenthesis squared equals 1 left brace, "y" less than or equal to 0 , right brace Has graph. To audio trace, press ALT+T.modx−2cosp−d,2d−d2+y+sinp2=1y≤0