Jawabanmu

2014-04-08T08:54:16+07:00
 \lim_{h \to \0} 0 3 (x + 2h ) ² - 3x² / h
 \lim_{h \to \0} 0 3 ( x² + 4xh + 4h²) - 3h² / h
 \lim_{h \to \0} 0 9xh - 12h² /h
 \lim_{h \to \0} 0 9x - 12 h
masukan h = 0
jadi hasilnya 9x
3 3 3