Jawaban:
d. 10 ²/₃
Penjelasan dengan langkah-langkah:
y = x² - 4x + 8 (asumsi bukan x² - 4x - 8)
y = 2x + 3
x² - 4x + 8 = 2x + 3
x² - 6x + 5 = 0
(x - 5)(x - 1) = 0
x = 5 atau x = 1
⁵∫₁ x² - 6x + 5 dx
= ⁵₁[1/3x³ - 3x² + 5x]
= [1/3(5³) - 3(5²) + 5(5)] - [1/3(1³) - 3(1²) + 5(1)]
= [125/3 - 75 + 25] - [1/3 - 3 + 5]
= (125/3 - 50) - (1/3 + 2)
= 124/3 - 52
= 124/3 - 156/3
= -32/3
= -10 ²/₃
L = |-10 ²/₃|
L = 10 ²/₃ satuan luas
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Jawaban:
d. 10 ²/₃
Penjelasan dengan langkah-langkah:
y = x² - 4x + 8 (asumsi bukan x² - 4x - 8)
y = 2x + 3
x² - 4x + 8 = 2x + 3
x² - 6x + 5 = 0
(x - 5)(x - 1) = 0
x = 5 atau x = 1
⁵∫₁ x² - 6x + 5 dx
= ⁵₁[1/3x³ - 3x² + 5x]
= [1/3(5³) - 3(5²) + 5(5)] - [1/3(1³) - 3(1²) + 5(1)]
= [125/3 - 75 + 25] - [1/3 - 3 + 5]
= (125/3 - 50) - (1/3 + 2)
= 124/3 - 52
= 124/3 - 156/3
= -32/3
= -10 ²/₃
L = |-10 ²/₃|
L = 10 ²/₃ satuan luas
" mohon maaf kalau salah "