NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections

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1 NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections

NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections are part of NCERT Solutions for Class 11 Maths. Here we have given NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections.

Board	CBSE
Textbook	NCERT
Class	Class 11
Subject	Maths
Chapter	Chapter 11
Chapter Name	Conic Sections
Exercise	Ex 11.1, Ex 11.2, Ex 11.3, Ex 11.4
Number of Questions Solved	62
Category	NCERT Solutions

NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections

Chapter 11 Conic Sections Exercise 11.1

In each of the following Exercises 1 to 5, find the equation of the circle with

Question 1.
centre (0, 2) and radius 2
Solution:
Here h = 0,k = 2 and r = 2
The equation of circle is,
(x-h)² + (y- k)² = r²
∴ (x – 0)² + (y – 2)² = (2)²
⇒ x² + y² + 4 – 4y = 4
⇒ x² + y² – 4y = 0

Question 2.
centre (-2,3) and radius 4
Solution:
Here h=-2,k = 3 and r = 4
The equation of circle is,
(x – h)² + (y – k)² = r²
∴(x + 2)² + (y – 3)² = (4)²
⇒ x² + 4 + 4x + y² + 9 – 6y = 16
⇒ x² + y² + 4x – 6y – 3 = 0

Question 3.
centre $\left( \frac { 1 }{ 2 } ,\quad \frac { 1 }{ 4 } \right)$ and radius $\frac { 1 }{ 12 }$
Solution:
here h = $\frac { 1 }{ 2 }$ , k = $\frac { 1 }{ 4 }$ and r = $\frac { 1 }{ 12 }$
The equation of circle is,
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 1

Question 4.
centre (1, 1) and radius $\sqrt { 2 }$
Solution:
Here h = l, k=l and r = $\sqrt { 2 }$
The equation of circle is,
(x – h)² + (y – k)² = r²
∴ (x – 1)² + (y – 1)² = $\left( \sqrt { 2 } \right)$ ²
⇒ x² + 1 – 2x + y² +1 – 2y = 2
⇒ x² + y² – 2x – 2y = 0

Question 5.
centre (-a, -b) and radius $\sqrt { { a }^{ 2 }-{ b }^{ 2 } }$ .
Solution:
Here h=-a, k = -b and r = $\sqrt { { a }^{ 2 }-{ b }^{ 2 } }$
The equation of circle is, (x – h)² + (y – k)² = r²
∴ (x + a)² + (y + b)² = $\left( \sqrt { { a }^{ 2 }-{ b }^{ 2 } } \right)$
⇒ x² + a² + 2ax + y² + b² + 2by = a² -b²
⇒ x² + y² + 2ax + 2 by + 2b² = 0

In each of the following exercises 6 to 9, find the centre and radius of the circles.

Question 6.
(x + 5)² + (y – 3)² = 36
Solution:
The given equation of circle is,
(x + 5)² + (y – 3)² = 36
⇒ (x + 5)² + (y – 3)² = (6)²
Comparing it with (x – h)2² + (y – k)² = r², we get
h = -5, k = 3 and r = 6.
Thus the co-ordinates of the centre are (-5, 3) and radius is 6.

Question 7.
x² + y² – 4x – 8y – 45 = 0
Solution:
The given equation of circle is
x² + y² – 4x – 8y – 45 = 0
∴ (x² – 4x) + (y² – 8y) = 45
⇒ [x² – 4x + (2)²] + [y² – 8y + (4)²] = 45 + (2)² + (4)²
⇒ (x – 2)² + (y – 4)² = 45 + 4 + 16
⇒ (x – 2)² + (y – 4)² = 65
⇒ (x – 2)² + (y – 4)²= $\left( \sqrt { 65 } \right) ^{ 2 }$
Comparing it with (x – h)² + (y – k)² = r², we
have h = 2,k = 4 and r = $\sqrt { 65 }$ .
Thus co-ordinates of the centre are (2, 4) and radius is $\sqrt { 65 }$ .

Question 8.
x² + y² – 8x + 10y – 12 = 0
Solution:
The given equation of circle is,
x² + y² – 8x + 10y -12 = 0
∴ (x² – 8x) + (y² + 10y) = 12
⇒ [x² – 8x + (4)²] + [y² + 10y + (5)²] = 12 + (4)² + (5)²
⇒ (x – 4)² + (y + 5)² = 12 + 16 + 25
⇒ (x – 4)² + (y + 5)² = 53
⇒ (x – 4)² + (y + 5)² = $\left( \sqrt { 53 } \right) ^{ 2 }$
Comparing it with (x – h)² + (y – k)² = r², we have h = 4, k = -5 and r = $\sqrt { 53 }$
Thus co-ordinates of the centre are (4, -5) and radius is $\sqrt { 53 }$ .

Question 9.
2x² + 2y² – x = 0
Solution:
The given equation of circle is,
2x² + 2y² – x = 0
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 2

Question 10.
Find the equation of the circle passing through the points (4, 1) and (6, 5) and whose centre is on the line 4x + y = 16.
Solution:
The equation of the circle is,
(x – h)² + (y – k)² = r² ….(i)
Since the circle passes through point (4, 1)
∴ (4 – h)² + (1 – k)² = r²
⇒ 16 + h² – 8h + 1 + k² – 2k = r²
⇒ h²+ k² – 8h – 2k + 17 = r² …. (ii)
Also, the circle passes through point (6, 5)
∴ (6 – h² + (5 – k)² = r²
⇒ 36 + h² -12h + 25 + k² – 10k = r²
⇒ h² + k² – 12h – 10kk + 61 = r² …. (iii)
From (ii) and (iii), we have h² + k² – 8h – 2k +17
= h² + k²– 12h – 10k + 61
⇒ 4h + 8k = 44 => h + 2k = ll ….(iv)
Since the centre (h, k) of the circle lies on the line 4x + y = 16
∴ 4h + k = 16 …(v)
Solving (iv) and (v), we get h = 3 and k = 4.
Putting value of h and k in (ii), we get
(3)² + (4)² – 8 x 3 – 2 x 4 + 17 = r²
∴ r² = 10
Thus required equation of circle is
(x – 3)² + (y – 4)² = 10
⇒ x² + 9 – 6x + y² +16 – 8y = 10
⇒ x² + y² – 6x – 8y +15 = 0.

Question 11.
Find the equation of the circle passing through the points (2, 3) and (-1, 1) and whose centre is on the line x – 3y – 11 = 0.
Solution:
The equation of the circle is,
(x – h)² + (y – k)² = r² ….(i)
Since the circle passes through point (2, 3)
∴ (2 – h)² + (3 – k)² = r²
⇒ 4 + h² – 4h + 9 + k² – 6k = r²
⇒ h²+ k² – 4h – 6k + 13 = r² ….(ii)
Also, the circle passes through point (-1, 1)
∴ (-1 – h)² + (1 – k)² = r²
⇒ 1 + h² + 2h + 1 + k² – 2k = r²
⇒ h² + k² + 2h – 2k + 2 = r² ….(iii)
From (ii) and (iii), we have
h² + k² – 4h – 6k + 13 = h² + k² + 2h – 2k + 2
⇒ -6h – 4k = -11 ⇒ 6h + 4k = 11 …(iv)
Since the centre (h, k) of the circle lies on the line x – 3y-11 = 0.
∴ h – 3k – 11 = 0 ⇒ h -3k = 11 …(v)
Solving (iv) and (v), we get
h = $\frac { 7 }{ 2 }$ and k = $\frac { -5 }{ 2 }$
Putting these values of h and k in (ii), we get
$\left( \frac { 7 }{ 2 } \right) ^{ 2 }+\left( \frac { -5 }{ 2 } \right) ^{ 2 }-\frac { 4\times 7 }{ 2 } -6\times \frac { -5 }{ 2 } +13={ r }^{ 2 }$
⇒ $\frac { 49 }{ 4 } +\frac { 25 }{ 4 } -14+15+13$ ⇒ ${ r }^{ 2 }=\frac { 65 }{ 2 }$
Thus required equation of circle is
⇒ $\left( x-\frac { 7 }{ 2 } \right) ^{ 2 }+\left( y+\frac { 5 }{ 2 } \right) ^{ 2 }=\frac { 65 }{ 2 }$
⇒ ${ x }^{ 2 }+\frac { 49 }{ 4 } -7x+{ y }^{ 2 }+\frac { 25 }{ 4 } +5y=\frac { 65 }{ 2 }$
⇒ 4x² + 49 – 28x + 4y² + 25 + 20y = 130
⇒ 4x² + 4y² – 28x + 20y – 56 = 0
⇒ 4(x² + y² – 7x + 5y -14) = 0
⇒ x² + y² – 7x + 5y -14 = 0.

Question 12.
Find the equation of the circle with radius 5 whose centre lies on x-axis and passes through the point (2, 3).
Solution:
Since the centre of the circle lies on x-axis, the co-ordinates of centre are (h, 0). Now the circle passes through the point (2, 3).
∴ Radius of circle
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 3

Question 13.
Find the equation of the circle passing through (0, 0) and making intercepts a and b on the co-ordinate axes.
Solution:
Let the circle makes intercepts a with x-axis and b with y-axis.
∴ OA = a and OB = b
So the co-ordinates of A are (a, 0) and B are (0,b)
Now, the circle passes through three points 0(0, 0), A(a, 0) and B(0, b).
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 4

Question 14.
Find the equation of a circle with centre (2, 2) and passes through the point (4, 5).
Solution:
The equation of circle is
(x – h)² + (y – k)² = r² ….(i)
Since the circle passes through point (4, 5) and co-ordinates of centre are (2, 2)
∴ radius of circle
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 5

Question 15.
Does the point (-2.5, 3.5) lie inside, outside or on the circle x² + y² = 25?
Solution:
The equation of given circle is x² + y² = 25
⇒ (x – 0)² + (y – 0)² = (5)²
Comparing it with (x – h)² + (y – k)² = r², we
get
h = 0,k = 0, and r = 5
Now, distance of the point (-2.5, 3.5) from the centre (0, 0)
$\sqrt { \left( 0+2.5 \right) ^{ 2 }+\left( 0-3.5 \right) ^{ 2 } } =\sqrt { 6.25+12.25 }$
$\sqrt { 18.5 }$ = 4.3 < 5.
Thus the point (-2.5, 3.5) lies inside the circle.

Chapter 11 Conic Sections Exercise 11.2

In each of the following Exercises 1 to 6, find the coordinates of the focus, axis of the parabola, the equation of the directrix and the length of the latus rectum.

Question 1.
y²= 12x
Solution:
The given equation of parabola is y² = 12x which is of the form y² = 4ax.
∴ 4a = 12 ⇒ a = 3
∴ Coordinates of focus are (3, 0)
Axis of parabola is y = 0
Equation of the directrix is x = -3 ⇒ x + 3 = 0
Length of latus rectum = 4 x 3 = 12.

Question 2.
x² = 6y
Solution:
The given equation of parabola is x² = 6y which is of the form x² = 4ay.
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 6

Question 3.
y² = – 8x
Solution:
The given equation of parabola is
y² = -8x, which is of the form y² = – 4ax.
∴ 4a = 8 ⇒ a = 2
∴ Coordinates of focus are (-2, 0)
Axis of parabola is y = 0
Equation of the directrix is x = 2 ⇒ x – 2 = 0
Length of latus rectum = 4 x 2 = 8.

Question 4.
x² = -16y
Solution:
The given equation of parabola is
x² = -16y, which is of the form x² = -4ay.
∴ 4a = 16 ⇒ a = 4
∴ Coordinates of focus are (0, -4)
Axis of parabola is x = 0
Equation of the directrix is y = 4 ⇒ y – 4 = 0
Length of latus rectum = 4 x 4 = 16.

Question 5.
y²= 10x
Solution:
The given equation of parabola is y² = 10x, which is of the form y² = 4ax.
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 7

Question 6.
x² = -9y
Solution:
The given equation of parabola is
x² = -9y, which is of the form x² = -4ay.
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 8

In each of the Exercises 7 to 12, find the equation of the parabola that satisfies the given conditions:

Question 7.
Focus (6, 0); directrix x = -6
Solution:
We are given that the focus (6, 0) lies on the x-axis, therefore x-axis is the axis of parabola. Also, the directrix is x = -6 i.e. x = -a and focus (6, 0) i.e. (a, 0). The equation of parabola is of the form y² = 4ax.
The required equation of parabola is
y² = 4 x 6x ⇒ y² = 24x.

Question 8.
Focus (0, -3); directri xy=3
Solution:
We are given that the focus (0, -3) lies on the y-axis, therefore y-axis is the axis of parabola. Also the directrix is y = 3 i.e. y = a and focus (0, -3) i.e. (0, -a). The equation of parabola is of the form x² = -4ay.
The required equation of parabola is
x² = – 4 x 3y ⇒ x² = -12y.

Question 9.
Vertex (0, 0); focus (3, 0)
Solution:
Since the vertex of the parabola is at (0, 0) and focus is at (3, 0)
∴ y = 0 ⇒ The axis of parabola is along x-axis
∴ The equation of the parabola is of the form y² = 4ax
The required equation of the parabola is
y² = 4 x 3x ⇒ y² = 12x.

Question 10.
Vertex (0, 0); focus (-2, 0)
Solution:
Since the vertex of the parabola is at (0, 0) and focus is at (-2, 0).
∴ y = 0 ⇒ The axis of parabola is along x-axis
∴ The equation of the parabola is of the form y² = – 4ax
The required equation of the parabola is
y² = – 4 x 2x ⇒ y² = -8x.

Question 11.
Vertex (0, 0), passing through (2, 3) and axis is along x-axis.
Solution:
Since the vertex of the parabola is at (0, 0) and the axis is along x-axis.
∴ The equation of the parabola is of the form y² = 4ax
Since the parabola passes through point (2, 3)
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 9

Question 12.
Vertex (0, 0), passing through (5, 2) and symmetric with respect toy-axis.
Solution:
Since the vertex of the parabola is at (0, 0) and it is symmetrical about the y-axis.
∴ The equation of the parabola is of the form x² = 4ay
Since the parabola passes through point (5, 2)
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 10

Chapter 11 Conic Sections Exercise 11.3

In each of the Exercises 1 to 9, find the coordinates of the foci, the vertices, the length of major axis, the minor axis, the eccentricity and the length of the latus rectum of the ellipse.

Question 1.
$\frac { { x }^{ 2 } }{ 36 } +\frac { { y }^{ 2 } }{ 16 } =1$
Solution:
Given equation of ellipse of $\frac { { x }^{ 2 } }{ 36 } +\frac { { y }^{ 2 } }{ 16 } =1$
Clearly, 36 > 16
The equation of ellipse in standard form is
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 11

Question 2.
$\frac { { x }^{ 2 } }{ 4 } +\frac { { y }^{ 2 } }{ 25 } =1$
Solution:
Given equation of ellipse is $\frac { { x }^{ 2 } }{ 4 } +\frac { { y }^{ 2 } }{ 25 } =1$
Clearly, 25 > 4
The equation of ellipse in standard form is
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 12

Question 3.
$\frac { { x }^{ 2 } }{ 16 } +\frac { { y }^{ 2 } }{ 9 } =1$
Solution:
Given equation of ellipse is $\frac { { x }^{ 2 } }{ 16 } +\frac { { y }^{ 2 } }{ 9 } =1$
Clearly, 16 > 9
The equation of ellipse in standard form is
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 14

Question 4.
$\frac { { x }^{ 2 } }{ 25 } +\frac { { y }^{ 2 } }{ 100 } =1$
Solution:
Given equation of ellipse is $\frac { { x }^{ 2 } }{ 25 } +\frac { { y }^{ 2 } }{ 100 } =1$
Clearly, 100 > 25
The equation of ellipse in standard form is
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 15

Question 5.
$\frac { { x }^{ 2 } }{ 49 } +\frac { { y }^{ 2 } }{ 36 } =1$
Solution:
Given equation of ellipse is $\frac { { x }^{ 2 } }{ 49 } +\frac { { y }^{ 2 } }{ 36 } =1$
Clearly, 49 > 36
The equation of ellipse in standard form is
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 16

Question 6.
$\frac { { x }^{ 2 } }{ 16 } +\frac { { y }^{ 2 } }{ 9 } =1$
Solution:
Given equation of ellipse is $\frac { { x }^{ 2 } }{ 16 } +\frac { { y }^{ 2 } }{ 9 } =1$
Clearly, 400 > 100
The equation of ellipse in standard form is
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 17

Question 7.
36x² + 4y² = 144
Solution:
Given equation of ellipse is 36x² + 4y² = 144
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 18

Question 8.
16x² + y² = 16
Solution:
Given equation of ellipse is16x² + y² = 16
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 20

Question 9.
4x² + 9y² = 36
Solution:
Given equation of ellipse is4x² + 9y² = 36
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 21

In each 0f the following Exercises 10 to 20, find the equation for the ellipse that satisfies the given conditions:

Question 10.
Vertices (±5, 0), foci (±4,0)
Solution:
Clearly, The foci (±4, o) lie on x-axis.
∴ The equation of ellipse is standard form is
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 23

Question 11.
Vertices (0, ±13), foci (0, ±5)
Solution:
Clearly, The foci (0, ±5) lie on y-axis.
∴ The equation of ellipse is standard form is
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 24

Question 12.
Vertices (±6, 0), foci (±4,0)
Solution:
Clearly, The foci (±4, 0) lie on x-axis.
∴ The equation of ellipse is standard form is
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 25

Question 13.
Ends of major axis (±3, 0), ends of minor axis (0, ±2)
Solution:
Since, ends of major axis (±3, 0) lie on x-axis.
∴ The equation of ellipse in standard form
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 26

Question 14.
Ends of major axis (0, $\pm \sqrt { 5 }$ ), ends of minor axis (±1, 0)
Solution:
Since, ends of major axis (0, $\pm \sqrt { 5 }$ ) lie on i-axis.
∴ The equation of ellipse in standard form
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 27

Question 15.
Length of major axis 26, foci (±5, 0)
Solution:
Since the foci (±5, 0) lie on x-axis.
∴ The equation of ellipse in standard form
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 28

Question 16.
Length of major axis 16, foci (0, ±6)
Solution:
Since the foci (0, ±6) lie on y-axis.
∴ The equation of ellipse in standard form
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 29

Question 17.
Foci (±3, 0) a = 4
Solution:
since the foci (±3, 0) on x-axis.
∴ The equation of ellipse in standard form
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 30

Question 18.
b = 3, c = 4, centre at the origin; foci on the x axis.
Solution:
Since the foci lie on x-axis.
∴ The equation of ellipse in standard form is
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 31

Question 19.
Centre at (0, 0), major axis on the y-axis and passes through the points (3, 2) and (1, 6)
Solution:
Since the major axis is along y-axis.
∴ The equation of ellipse in standard form
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 32

Question 20.
Major axis on the x-axis and passes through the points (4, 3) and (6, 2).
Solution:
Since the major axis is along the x-axis.
∴ The equation of ellipse in standard form is
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 33

Chapter 11 Conic Sections Exercise 11.4

In each of the Exercises 1 to 6, find the coordinates of the foci and the vertices, eccentricity and the length of the latus rectum of the hyperbolas.

Question 1.
$\frac { { x }^{ 2 } }{ 16 } -\frac { { y }^{ 2 } }{ 9 } =1$
Solution:
Given equation of hyperbola is
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 34

Question 2.
$\frac { { y }^{ 2 } }{ 9 } -\frac { x^{ 2 } }{ 27 } =1$
Solution:
Given equation of hyperbola is
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 35

Question 3.
9y² – 4x² = 36
Solution:
Given equation of hyperbola is9y² – 4x² = 36
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 37

Question 4.
16x² – 9y² = 576
Solution:
Given equation of hyperbola is16x² – 9y² = 576
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 38

Question 5.
5y² – 9x² = 36
Solution:
Given equation of hyperbola is
5y² – 9x² = 36
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 39

Question 6.
49y² – 16x² = 784
Solution:
Given equation of hyperbola is49y² – 16x² = 784
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 41

In each of the Exercises 7 to 15, find the equations of the hyperbola satisfying the given conditions.

Question 7.
Vertices (±2,0), foci (±3,0)
Solution:
Vertices are (±2, 0) which lie on x-axis. So the equation of hyperbola in standard form
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 42

Question 8.
Vertices (0, ±5), foci (0, ±8)
Solution:
Vertices are (0, ±5) which lie on x-axis. So the equation of hyperbola in standard form
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 43

Question 9.
Vertices (0, ±3), foci (0, ±5)
Solution:
Vertices are (0, ±3) which lie on x-axis. So the equation of hyperbola in standard form
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 44

Question 10.
Foci (±5, 0), the transverse axis is of length 8.
Solution:
Here foci are (±5, 0) which lie on x-axis. So the equation of the hyperbola in standard
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 46

Question 11.
Foci (0, ±13), the conjugate axis is of length 24.
Solution:
Here foci are (0, ±13) which lie on y-axis.
So the equation of hyperbola in standard
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 47

Question 12.
Foci ( $\pm 3\sqrt { 5 }$ ,0) , the latus rectum is of length 8.
Solution:
Here foci are ( $\pm 3\sqrt { 5 }$ , 0) which lie on x-axis.
So the equation of the hyperbola in standard
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 48

Question 13.
Foci (±4, 0), the latus rectum is of length 12.
Solution:
Here foci are (±4, 0) which lie on x-axis.
So the equation of the hyperbola in standard
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 50

Question 14.
Vertices (+7, 0), e = $\frac { 4 }{ 3 }$
Solution:
Here vertices are (±7, 0) which lie on x-axis.
So, the equation of hyperbola in standard
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 51

Question 15.
Foci (0, $\pm \sqrt { 10 }$ ), passing through (2, 3).
Solution:
Here foci are (0, $\pm \sqrt { 10 }$ ) which lie on y-axis.
So the equation of hyperbola in standard form
NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections 52

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NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections

NCERT Solutions for Class 11 Maths Chapter 11 Conic Sections

Chapter 11 Conic Sections Exercise 11.1

Chapter 11 Conic Sections Exercise 11.2

Chapter 11 Conic Sections Exercise 11.3

Chapter 11 Conic Sections Exercise 11.4

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