Galladeavieroa) 1/3 sin (3x – 2) - 3 cos (2 – 3x) + c b) U = 3x^2 + 5 du = 6x dx x dx = 1/6 du int 1/6 u^4 du = 1/30 U^5 + c = 1/30 (3x^2 +5)^5 + c c) Gunakan table defer ………intr x^2……………cos x 2x……………..sin x 2 …………….-cos x 0 ……………- sin x = x^2 sin x +2x cos x - 2 sin x + c 2). Y1 = Y2 L = int (3..0) (2 + x +x^2) L = (2x + ½ x^2 + 1/3x^3| 3..0| L = 2(3) + ½ (9) + 1/3 (27) = 6+4,5 + 9 = 19.5
3) V = pi int (2..0) { 4x- 2x^2) dx V= pi { 2x^2 – 2/3 x^3| 2..0| V = pi ( 2(4) – 2/3(8) V = pi ( 8 – 16/3 ) = pi (8/3)
b) U = 3x^2 + 5
du = 6x dx
x dx = 1/6 du
int 1/6 u^4 du = 1/30 U^5 + c = 1/30 (3x^2 +5)^5 + c
c) Gunakan table
defer ………intr
x^2……………cos x
2x……………..sin x
2 …………….-cos x
0 ……………- sin x
= x^2 sin x +2x cos x - 2 sin x + c
2). Y1 = Y2
L = int (3..0) (2 + x +x^2)
L = (2x + ½ x^2 + 1/3x^3| 3..0|
L = 2(3) + ½ (9) + 1/3 (27) = 6+4,5 + 9 = 19.5
3) V = pi int (2..0) { 4x- 2x^2) dx
V= pi { 2x^2 – 2/3 x^3| 2..0|
V = pi ( 2(4) – 2/3(8)
V = pi ( 8 – 16/3 ) = pi (8/3)