gambar b grafik a. melalui x1 = -3 dan x2 = -1 y = a(x + 3)(x + 1) b. melalui (0,-3) -3= a (0 +3)(0+ 1) -3= 3a a = - 1 a < 0 titik maksimum (xp, yp)
y = -(x + 3)( x+ 1) y = - x²- 4x - 3 xp = -b/2a xp= 4/2 xp= 2
yp = -(2)² - 4(-2) - 3 yp = - 4 + 8 - 3 yp = 1
titik minimum (xp, yp)= ( 2 , 1)
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GRafik FUngsi KUadrat
titik maksimum
gambar a grafik
a. melalui x1 = 1 dan x2 = 6
y = a(x - 1)(x - 6)
b. melalui (0,6)
6= a (0 -1)(0 - 6)
6= 6a
a = 1
a> 0 titik minimum (xp, yp)
y = (x - 1)( x- 6)
y = x²- 7x + 6
xp = -b/2a
xp= 7/2
yp = (7/2)² - 7(7/2) + 6
yp = 49/4 - 49/2 + 6
yp = -6¹/₄
titik minimum (xp, yp)= ( ⁷/₂ , - 6¹/₄)
gambar b grafik
a. melalui x1 = -3 dan x2 = -1
y = a(x + 3)(x + 1)
b. melalui (0,-3)
-3= a (0 +3)(0+ 1)
-3= 3a
a = - 1
a < 0 titik maksimum (xp, yp)
y = -(x + 3)( x+ 1)
y = - x²- 4x - 3
xp = -b/2a
xp= 4/2
xp= 2
yp = -(2)² - 4(-2) - 3
yp = - 4 + 8 - 3
yp = 1
titik minimum (xp, yp)= ( 2 , 1)
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