Expression 1: "r" equals 10 left parenthesis, StartAbsoluteValue, 2cos 3 theta , EndAbsoluteValue floor left parenthesis, negative cos left parenthesis, 3 theta , right parenthesis plus 1 , right parenthesis plus 0.3 , right parenthesisr=102cos3θfloor−cos3θ+1+0.3
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domain \theta Minimum:
less than or equal to theta less than or equal to≤θ≤