Hitung pengintegralan dibawah ini. Terima kasih

-2Int-4 y² + y^-2 dy
[(1/3 y² - 1/y)(-2) ]-] (1/3 y² - 1/y)-4]
= 1/3(4) + 1/2 -( 1/3(16) + 1/4)
=11/6- ( 61/12)
= 11(12) - 6(61)/71
= 132 - 366 / 71
= - 234/71