parabola
TRANSCRIPT
PARABOLA
The graphs of quadratic functions are called parabolas
Directrix - A parabola is the set of all points equidistant
from a fixed lineFocus- Fixed point not on the line
• Bentuk umum quadratic
• Bentuk standard/vertex form
• a > 0, u shape• a < 0, n shape• Kordinat bucu parabola graf (h,k)
cbxaxy 2
khxay )(
• Bentuk umum quadratic
• Bentuk standard/vertex form
• a > 0, open right• a < 0, open left• Kordinat bucu parabola graf (h,k)
cbyayx 2
hkyax 2)(
An ellipse is all points found by keeping the sum of the distances from two points (each of which is called a focus of the ellipse) constant
Bentuk umum:
Titik (h,k) adalah sebagai titik pusat
1)()(
2
2
2
2
b
ky
a
hx
Cara melukis graf elips
• Kenal pasti 4 titik utama- Right point (h+a,k)- Left point (h-a,k)- Top point (h,k+b)- Bottom point (h,k-b)• Kemudian sambung semua titik tersebut
secara oval