" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Verified answer
Jawaby = x² - 3x - 4
y= 0
x² - 3x - 4 =0
(x - 4)(x + 1)= 0
x= - 1 atau x = 4
batas luasan x = 2 dan x = 6
maka luasan terdapat dua bagian
L1 = untuk x = 2 sd 4 ( luasan dibawah sumbu x)
L2 = untuk x = 4 sd 6 (luasan diatas sumbu x)
L = L1 + L2
L = - ₂⁴ ∫ x² - 3x - 4 dx + ₄⁶∫ x² - 3x - 4 dx
L = -[ 1/3 x³ - 3/2 x² - 4x ]⁴₂ + [ 1/3 x³ - 3/2 x² - 4x]⁶₄
L = - [1/3(56) - 3/2(12)- 4(2)] + [ 1/3 (152) - 3/2(20) - 4(2)]
L = - [ - 7 ¹/₃ ] + [12 ²/₃]
L = 7 ¹/₃ + 12 ²/₃
L: = 20