Expression 4: "y" equals negative 2 left parenthesis, tan left parenthesis, "t" , right parenthesis , right parenthesis "x" plus 4 left parenthesis, tan left parenthesis, "t" , right parenthesis , right parenthesis Has graph. To audio trace, press ALT+T.y=−2tantx+4tant
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Expression 5: "y" equals tangent left parenthesis, 2tan to the negative 1st power left parenthesis, negative 2 left parenthesis, tan left parenthesis, "t" , right parenthesis , right parenthesis , right parenthesis , right parenthesis times "x" minus 2tangent left parenthesis, 2tan to the negative 1st power left parenthesis, negative 2 left parenthesis, tan left parenthesis, "t" , right parenthesis , right parenthesis , right parenthesis , right parenthesis Has graph. To audio trace, press ALT+T.y=tan2tan−1−2tant·x−2tan2tan−1−2tant