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Jawaban Terkonfirmasi
Jawab
kurva melalui (0,0) dan puncak (2,4)
y = a(x- 2)² + 4
0 = a (0-2)² + 4
4a = – 4
a = – 1
pers kurva y = -(x-2)² + 4
y = – x² + 4x – 4 + 4
y = – x² + 4x
pers garis melalui (0,0) dan(3,3) → y = x
batas integral x = 0 , x = 3
Luas = ₀³∫ (-x² + 4x) – (x ) dx
Luas = – 1/3 x³ + 3/2 x² ] ³₀
Luas = – 1/3 (27) + 3/2 (9)
Luas = – 9 + 27/2 = 9/2
A 9/2 maaf kalo salah