Expression 3: sine left parenthesis, "x" , right parenthesis positive sine left parenthesis, 2 "x" , right parenthesis Has graph. To audio trace, press ALT+T.sinx+sin2x
3
Expression 4: sine left parenthesis, "x" , right parenthesis positive 2 times sine left parenthesis, 2 "x" , right parenthesis Has graph. To audio trace, press ALT+T.sinx+2·sin2x