110 2 2 ;1 − 1 = 1 − 1 2 1; ;1 2 = 2 2 1; ;1 2 = 1 2 ; CONTOH: Tentukan : D(tan 1: ) -1 1; PENYELESAIAN: ;1 1: = 1 1: 1; 1+ 2 1; 1: 1− = 1 2 2 2 1: 1+ 1; 1− = 1; 4 2 1; : 1: 2 Bahan Ajar