Persamaan sumbu simetri grafik fungsi kuadrat y = 5x2 – 20x – 1
Persamaan sumbu simetri grafik fungsi kuadrat y = 5x2 – 20x – 1!
Jawab:
y = 5x2 – 20x – 1
a = 5, b = -20, dan c = -1
xs = …. ?
xs = -b/2a
= -(-20)/2 . 5
= 20/10
xs = 10
Jadi persamaan sumbu simetrinya adalah xs = 10.
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