Question

gambar grafik fungsi. Y=X²-X-2
Jawab
a titik Potong Sumbu x
X²-X-2=0 » a=1 b=-1 c=-2
P + Q =-1
PxQ = -2
(x + 1) (x - 2) = 0
X=-1 X=2
(-1,0) dan (2,0)
b. titik potong Sumbu y
Y = -2 (0,-2)
c. Sumbu Simetri
X = -b/2a
= - -1/2(1)
= - 1/2
= 1/2
(1/2,0)
d.titik puncak
X= -b/2a
= 1/2
Y= -b²-4ac/4a
= -1+8/4
=-9/4
(1/2,-9/4) ​

Answer 1

Jawaban:

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