Jawab:
fungsi kuadrat f(x) = ax² + bx + c
nilai maksimum y = D/(-4a)
D = b² - 4ac
Penjelasan dengan langkah-langkah:
f(x) = 2x² - 4x + 1/2 m
a = 2 , b = - 4, c = 1/2
nilai maksimum = 7
D/-4a = 7
D = -28 a
b² - 4ac = - 28 a
(-4)² - 4(2)(1/2 m) = - 28 (2)
16 - 4m = - 56
-4m = - 72
m = 18
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Verified answer
Jawab:
fungsi kuadrat f(x) = ax² + bx + c
nilai maksimum y = D/(-4a)
D = b² - 4ac
Penjelasan dengan langkah-langkah:
f(x) = 2x² - 4x + 1/2 m
a = 2 , b = - 4, c = 1/2
nilai maksimum = 7
D/-4a = 7
D = -28 a
b² - 4ac = - 28 a
(-4)² - 4(2)(1/2 m) = - 28 (2)
16 - 4m = - 56
-4m = - 72
m = 18