L06_A_1L06_A_2L06_A_3Total differential (Sec 1-4) L06_B_1L06_B_2Implicit differentiation (Sec 5-7) L06_C_1L06_C_2Maximum and minimum problems (Sec 8-10) L06_D_1L06_D_2Change of variables (Sec 11-12)