Expression 1: StartFraction, 2 StartAbsoluteValue, cos left parenthesis, "x" , right parenthesis , EndAbsoluteValue Over StartRoot, left parenthesis, 0.8sin "x" plus 0.6 4sin 2 "x" , right parenthesis squared plus left parenthesis, 0.8cos "x" plus 0.6 4cos 2 "x" plus 1 , right parenthesis squared , EndRoot , EndFraction Has graph. To audio trace, press ALT+T.2cosx0.8sinx+0.64sin2x2+0.8cosx+0.64cos2x+12