3 (²log y)-²log 1/y adalah

3 ( 2 log y ) - 2 log y^2 + 2 log 1/y
6 log y^3 - 2 log y^2 + 2 log 1/y
6 log 1
1

= ²log y³ - ²log y² + ²Log y⁻¹

= ²log (y³/y²). y⁻¹

= ²log (y.y⁻¹)

= ²log y°

=² log 1

= 0