misal Q(p,r)
rumus parabola => y=a(x-xp)^2+yp
sehingga sumbu simetris xp=b
(p+m)/2=b
p=2b-m
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misal Q(p,r)
rumus parabola => y=a(x-xp)^2+yp
sehingga sumbu simetris xp=b
(p+m)/2=b
p=2b-m