Let Z distance 기 be d₂ Point on ellipse between z and I d₁ = and distance = a (Z-1) (2-1) between z √ (Z+1) (2+1) As Point i so == -1 Ад I and -1 are foci of ellipse and Point on ellipse then by defination d₁ + d₂ = c (constant) √ (z-1) (1) + √ (z+1) (2+1) ZZ-Z-Z +1 is then is di 기 C= 2√2 So equation of ellipse and -1 √1-² +² +1 +√1+i-i+1 i Squaring both sides ZZ + Z + € +1 zz-z-Z+1 +√ZZ+Z+ = +1 = 2 6ZZ-Z²-Z² = 8 ²- 7² = 8 с on the ellipse so that Put z= i and ZZ = 1 is d₂ so that = c then = C = z be a = 2√√/2 2 (Z²+ 1) + 2 √(z{+1)³²_ (Z+Z) ² (zz71) 2 (2+z) 2 ZZ-3 Again Squeasing both sides 2 (ZZ-3)² = (2+1)²2²_ (Z+Z)² (zz)2+9 - 6zz (zē)²+1+2zz-(Z)²_ (€) ²³-277 8

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter7: Conic Sections And Quadratic Systems
Section7.2: The Ellipse
Problem 69E
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Let
Z
distance
T
be
d₂ =
Point
between = and I
d₁ =
di
(Z-1) (Z-1)
and distance between z
√ (Z+1) (2+1)
a
So
As
I and -1
are foci of ellipse and
Point on ellipse then by defination
d₁ + d₂ =
c (constant)
√ (z-1) (21) +
As Point i
2= - i
√₁-i + i +1
is
on ellipse
ZZ-Z-Z+1 +
(Z+1) (Z+1) = C
-√zz
Squasing both sides
them
is d, so that
во
C= 2√2
So equation of ellipse
2
and I is d₂ then
on the ellipse so that Put z= i
= |
and zz
=
ZZ+Z+Z +1
zz-z-Z +1 +√√ Z = + = + = +1
+]
+√√√1+1-1+1 = C
| +i-i+|
2 (ZZ+ 1) +2 √√(z{+1)²_=_= (2+²)² =
= √(√(2²71) ³² (2+2) ²
ZZ-3
Again Squeasing both sides
= 8
= C
z be a
= 2√2
2
(ZZ-3)² = (ZĒ+1)²_ (z+Zj²
(zz) ² + 9 - 6 zz (zē)²+1+2zē−(z)²-(z)²-2z=
6Zz-z²Z²
8
Transcribed Image Text:Let Z distance T be d₂ = Point between = and I d₁ = di (Z-1) (Z-1) and distance between z √ (Z+1) (2+1) a So As I and -1 are foci of ellipse and Point on ellipse then by defination d₁ + d₂ = c (constant) √ (z-1) (21) + As Point i 2= - i √₁-i + i +1 is on ellipse ZZ-Z-Z+1 + (Z+1) (Z+1) = C -√zz Squasing both sides them is d, so that во C= 2√2 So equation of ellipse 2 and I is d₂ then on the ellipse so that Put z= i = | and zz = ZZ+Z+Z +1 zz-z-Z +1 +√√ Z = + = + = +1 +] +√√√1+1-1+1 = C | +i-i+| 2 (ZZ+ 1) +2 √√(z{+1)²_=_= (2+²)² = = √(√(2²71) ³² (2+2) ² ZZ-3 Again Squeasing both sides = 8 = C z be a = 2√2 2 (ZZ-3)² = (ZĒ+1)²_ (z+Zj² (zz) ² + 9 - 6 zz (zē)²+1+2zē−(z)²-(z)²-2z= 6Zz-z²Z² 8
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