Jawabanmu

2014-06-15T12:52:34+07:00
 \lim_{x \to \-3}  \frac{1-cos(x+3)}{x^{2}+6x+9}  = \lim_{x \to \-3}  \frac{1-(1-2sin^{2} \frac{1}{2}(x+3))}{(x+3)(x+3)}
=\lim_{x \to \-3}  \frac{2sin \frac{1}{2}(x+3)sin \frac{1}{2}(x+3)}{(x+3)(x+3)}
=2.1/2.1/2 = 1/2 (B)
bukan 3 tapi -3
lim x→-3 bukan lim x→3
Lim x→-3 bukan Lim x→3
lim x→-3 bukan lim x→3