Expression 2: "y" plus left parenthesis, 8 times pi , right parenthesis equals left parenthesis, "o" times pi , right parenthesis plus sine left parenthesis, "x" , right parenthesis left brace, negative 22 less than or equal to "x" less than or equal to 25 , right bracey+8·π=o·π+sinx−22≤x≤25
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Expression 3: "x" plus left parenthesis, 8 times pi , right parenthesis equals left parenthesis, "o" times pi , right parenthesis plus sine left parenthesis, "y" , right parenthesis left brace, negative 22 less than or equal to "y" less than or equal to 25 , right bracex+8·π=o·π+siny−22≤y≤25