tolong bantuan ny kawansekalian yg bs jwb soal diatas yg bgian di kolom, tulis cara kerja ny dgn lngkp ya!!

f(x) = [tex]f ( x) = \int\limits^a_b {2x + 1} \, dx = x^2+x+c f (2) = 2^2 + 2 +c = 3 4+2+c = 3 c= 3-6 =-6[/tex]f(x) = [tex]f ( x) = \int\limits^a_b {2x + 1} \, dx = x^2+x+c f (2) = 2^2 + 2 +c = 3 4+2+c = 3 c= 3-6 =-6[/tex]

6) f(x) = int (2x + 1) dx
f(x) = x^2 + x + C
f(2) = 2^2 + 2 + C = 3 => 4 + 2 + C = 3 => C = -3
f(x) = x^2 + x - 3

7) int (x^3 - 1)/√x dx
= Int (x^3 - 1).x^-1/2 dx
= Int (x^5/2 - x^-1/2) dx
= 1/(7/2) x^7/2 - 1/(1/2) x^1/2 + C
= 2/7 x^3 √x - 2 √x + C
= 2/7 x^3 √x - 14/7 √x + C
= 2/7 √x (x^3 - 7) + C