Jawabanmu

2014-03-07T15:48:26+07:00
F(  \frac{π}{4} ) - f(  \frac{11π}{12} )
= sin 2(  \frac{π}{4} ) - sin 2(  \frac{11π}{12} )
= sin (  \frac{π}{2} ) - sin (  \frac{11π}{6} )
= sin  90^{o} -  sin  330^{o}
= 1 - (-1/2)
= 1 + 1/2
= 1 1/2 = 3/2