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Verified answer
Jawab36)
₋₁²∫ (x² + 4x -2) dx
= [ 1/3 x³ + 2x² - 2x]²₋₁
= 1/3 (8+1) + 2(4 -1)- 2(2+1)
= 3 + 6 - 6
= 3
37) Luas y = x² - 7x + 10 dengan sumbu x
batas integral ,jika y =0
x² - 7x + 10 = 0
(x - 5)( x - 2)= 0
x= 2 atau x = 5
Daerah Luasam dibawah sumbu x
Luas = - ₂⁵∫ (x² - 7x + 10) dx
Luas = - [ 1/3 x³- 7/2 x² + 10 x]⁵₂
Luas = - [ 1/3 (5³-2³) - 7/2 (5²-2²) + 10 (5 - 2)]
Luas = - [ 117/3 - 147/2 + 30 ] = - [ - 4 ¹/₂]
Luas = 4 ¹/₂ satuan