Expression 3: cosine "x" minus 1 left brace, negative 3 less than "x" less than 3 , right brace Has graph. To audio trace, press ALT+T.cosx−1−3<x<3
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Expression 4: cosine left parenthesis, 1 half left parenthesis, 3.2 "x" , right parenthesis , right parenthesis minus 2 left brace, negative 3 less than "x" less than 3 , right brace Has graph. To audio trace, press ALT+T.cos123.2x−2−3<x<3
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Expression 5: left parenthesis, 2 left parenthesis, "x" plus 2 , right parenthesis , right parenthesis squared plus left parenthesis, 2 "y" , right parenthesis squared equals 1 Has graph. To audio trace, press ALT+T.2x+22+2y2=1
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Expression 6: left parenthesis, 2 left parenthesis, "x" minus 2 , right parenthesis , right parenthesis squared plus left parenthesis, 2 "y" , right parenthesis squared equals 1 Has graph. To audio trace, press ALT+T.2x−22+2y2=1