Question

Pliss kk no. 38 ,Ajarin. buat belajar UN aku

Answer 1

Pertama Integralkan 6x² + 4x menjadi...
=6/3x³ + 4/2x²
=2x³ +2x²

kemudian subtitusi x dengan batas yaitu 3 dan 1...
= [ 2(3)³ + 2(3)² ] - [ 2(1)³ + 2(1)² ]
= [ 2(27) + 2(9) ] - [ 2 + 2 ]
= [ 54 + 18 ] - [ 4 ]
= [ 72 ] - [ 4 ]
= 68

Answer 2

Integral, disoal integral 3 dan 1, 6x^2 + 4x yg berarti ax^2 + bx. = (a/pangkat+1)x^3 + (b/pangkat+1)x^2 = (6/2+1)x^3 + (4/1+1)x^2 = (6/3)x^3 + (4/2)x^2 = 2x^3 + 2x^2 Integral Sub 3: = 2(3)^3 + 2(3)^2 = 2.27 + 2.9 = 54 + 18= 72 Integral Sub 1: = 2(1)^3 + 2(1)^2 = 2.1 + 2.1 = 2 + 2= 4 Hasil= InSub3-InSub1= 72-4= 68