Sample Question Paper 9 - Math, Class 12 | Mathematics (Maths) Class 12 - JEE PDF Download

 Page 1


  
 
CBSE XII | Mathematics 
Sample Paper – 9  
 
  www.topperlearning.com  1 
Mathematics 
Class XII 
Sample Paper – 9 
Time: 3 hours                    Total Marks: 100 
 
1. All questions are compulsory. 
2. The question paper consist of 29 questions divided into three sections A, B, C and D. 
Section A comprises of 4 questions of one mark each, section B comprises of 8 
questions of two marks each, section C comprises of  11 questions of four marks 
each and section D comprises of 6 questions of six marks each. 
3. Use of calculators is not permitted. 
 
SECTION – A 
 
1. Write the element which is denoted by a32 in the given matrix 
1 16 8 9
7 5 3 2
4 10 6 11
??
??
??
??
??
  
 
2. Differentiate sin (cos x) w.r.t. x 
3. Is the differential equation given by 
2
d dy
x1
dx dx
? ? ? ?
? ? ?
? ? ? ?
? ? ? ?
, linear or nonlinear. Give 
reason. 
4. Find the angle between following pairs of line 
x 4 y 1 z 3 x 1 y 4 z 5
and
3 5 4 1 1 2
? ? ? ? ? ?
? ? ? ? 
 
OR 
 
Find the angle between following pairs of line 
x 1 y 2 z 3 x 3 y 5 z 1
and
2 3 3 1 8 4
? ? ? ? ? ?
? ? ? ?
??
 
 
 
 
 
 
Page 2


  
 
CBSE XII | Mathematics 
Sample Paper – 9  
 
  www.topperlearning.com  1 
Mathematics 
Class XII 
Sample Paper – 9 
Time: 3 hours                    Total Marks: 100 
 
1. All questions are compulsory. 
2. The question paper consist of 29 questions divided into three sections A, B, C and D. 
Section A comprises of 4 questions of one mark each, section B comprises of 8 
questions of two marks each, section C comprises of  11 questions of four marks 
each and section D comprises of 6 questions of six marks each. 
3. Use of calculators is not permitted. 
 
SECTION – A 
 
1. Write the element which is denoted by a32 in the given matrix 
1 16 8 9
7 5 3 2
4 10 6 11
??
??
??
??
??
  
 
2. Differentiate sin (cos x) w.r.t. x 
3. Is the differential equation given by 
2
d dy
x1
dx dx
? ? ? ?
? ? ?
? ? ? ?
? ? ? ?
, linear or nonlinear. Give 
reason. 
4. Find the angle between following pairs of line 
x 4 y 1 z 3 x 1 y 4 z 5
and
3 5 4 1 1 2
? ? ? ? ? ?
? ? ? ? 
 
OR 
 
Find the angle between following pairs of line 
x 1 y 2 z 3 x 3 y 5 z 1
and
2 3 3 1 8 4
? ? ? ? ? ?
? ? ? ?
??
 
 
 
 
 
 
  
 
CBSE XII | Mathematics 
Sample Paper – 9  
 
     
SECTION – B  
 
5.  Consider the function f: R+ ? [4, 8) defined by f(x) = x² + 4, where R+ is the set of all 
non-negative real numbers. Show that f is invertible. Also find the inverse of f. 
6.  If A = diag (1 -1 2) and B = diag (2 3 -1), find A + B, 3A + 4B. 
7.  Evaluate: 
 
x
x 2x
e
dx.
5 4e e
?
??
 
8.  Evaluate: 
? ?
? ?
x
3
x 4 e
dx.
x2
?
?
?
 
OR 
Evaluate: 
2
3
x
dx
1x
?
?
 
 
9.  Form the differential equation y
2
 = m(a
2
 - x
2
) by eliminating parameters m and a 
10.  Find p, if the points (1, 1, p)  and (-3, 0, 1) are equidistant from the plane whose equation is  
r. 3i 4j 12k 13 0
 
OR 
Prove that: [a b,b c,c a] 2 [a b c] ? ? ? ? 
11. The probability that a student entering a university graduates is 0.4. Find the 
probability that out of 3 students of the university: 
i. None will graduate 
ii. Only one will graduate 
12.  A bag contains 5 white and 3 black balls and another bag contains 3 white and 4 
black balls. A ball is drawn from the first bag and without seeing its colour, is put in 
the second bag. Find the probability that if now a ball is drawn from the second bag, 
it is black in colour. 
OR 
Page 3


  
 
CBSE XII | Mathematics 
Sample Paper – 9  
 
  www.topperlearning.com  1 
Mathematics 
Class XII 
Sample Paper – 9 
Time: 3 hours                    Total Marks: 100 
 
1. All questions are compulsory. 
2. The question paper consist of 29 questions divided into three sections A, B, C and D. 
Section A comprises of 4 questions of one mark each, section B comprises of 8 
questions of two marks each, section C comprises of  11 questions of four marks 
each and section D comprises of 6 questions of six marks each. 
3. Use of calculators is not permitted. 
 
SECTION – A 
 
1. Write the element which is denoted by a32 in the given matrix 
1 16 8 9
7 5 3 2
4 10 6 11
??
??
??
??
??
  
 
2. Differentiate sin (cos x) w.r.t. x 
3. Is the differential equation given by 
2
d dy
x1
dx dx
? ? ? ?
? ? ?
? ? ? ?
? ? ? ?
, linear or nonlinear. Give 
reason. 
4. Find the angle between following pairs of line 
x 4 y 1 z 3 x 1 y 4 z 5
and
3 5 4 1 1 2
? ? ? ? ? ?
? ? ? ? 
 
OR 
 
Find the angle between following pairs of line 
x 1 y 2 z 3 x 3 y 5 z 1
and
2 3 3 1 8 4
? ? ? ? ? ?
? ? ? ?
??
 
 
 
 
 
 
  
 
CBSE XII | Mathematics 
Sample Paper – 9  
 
     
SECTION – B  
 
5.  Consider the function f: R+ ? [4, 8) defined by f(x) = x² + 4, where R+ is the set of all 
non-negative real numbers. Show that f is invertible. Also find the inverse of f. 
6.  If A = diag (1 -1 2) and B = diag (2 3 -1), find A + B, 3A + 4B. 
7.  Evaluate: 
 
x
x 2x
e
dx.
5 4e e
?
??
 
8.  Evaluate: 
? ?
? ?
x
3
x 4 e
dx.
x2
?
?
?
 
OR 
Evaluate: 
2
3
x
dx
1x
?
?
 
 
9.  Form the differential equation y
2
 = m(a
2
 - x
2
) by eliminating parameters m and a 
10.  Find p, if the points (1, 1, p)  and (-3, 0, 1) are equidistant from the plane whose equation is  
r. 3i 4j 12k 13 0
 
OR 
Prove that: [a b,b c,c a] 2 [a b c] ? ? ? ? 
11. The probability that a student entering a university graduates is 0.4. Find the 
probability that out of 3 students of the university: 
i. None will graduate 
ii. Only one will graduate 
12.  A bag contains 5 white and 3 black balls and another bag contains 3 white and 4 
black balls. A ball is drawn from the first bag and without seeing its colour, is put in 
the second bag. Find the probability that if now a ball is drawn from the second bag, 
it is black in colour. 
OR 
  
 
CBSE XII | Mathematics 
Sample Paper – 9  
 
     
A doctor is to visit a patient. Form past experience, it is known that the probabilities 
that he will come by train, bus, scooter or by other means of transport are 
respectively
3 1 1 2
, , and
10 5 10 5
. The probabilities that he will be late are 
1 1 1
, and
4 3 12
if 
he comes by train, bus and scooter respectively. But if he comes by other means of 
transport, then he will not be late. When he arrives, he is late. What is the 
probability that the doctor came by train? 
 
SECTION – C  
 
13.  
(i) If f: N ? Z s.t f(x) = x and g: Z ? Z s.t g(x) = |x|.  
      Show that gof is injective but g is not. 
(ii) If f: N ? N s.t f(x) = x + 1 and g: N ? N s.t g(x) =
x 1 if x 1
1 if x 1
?? ?
?
?
?
.  
       Show that g of is subjective but f is not. 
 
OR 
Show that the function f :R R ? defined by 
2x 1
f(x) , x R
3
?
?? is one-one and 
onto function. Also find the inverse of the function
 
f. 
 
14. Solve the equation.  
sin
-1
 (1 – x) – 2 sin
-1
 x = 
2
?
 
15. ??
23
23
23
x x 1+x
If x, y, and z are different  and y y 1+y 0; show that xyz = 1 
z z 1+z
 
16. Differentiate 
x
x
x w.r.t. x 
OR 
 
If 
? ? ? ?
tanx secx dy
y sinx cosx ,find
dx
?? 
 
Page 4


  
 
CBSE XII | Mathematics 
Sample Paper – 9  
 
  www.topperlearning.com  1 
Mathematics 
Class XII 
Sample Paper – 9 
Time: 3 hours                    Total Marks: 100 
 
1. All questions are compulsory. 
2. The question paper consist of 29 questions divided into three sections A, B, C and D. 
Section A comprises of 4 questions of one mark each, section B comprises of 8 
questions of two marks each, section C comprises of  11 questions of four marks 
each and section D comprises of 6 questions of six marks each. 
3. Use of calculators is not permitted. 
 
SECTION – A 
 
1. Write the element which is denoted by a32 in the given matrix 
1 16 8 9
7 5 3 2
4 10 6 11
??
??
??
??
??
  
 
2. Differentiate sin (cos x) w.r.t. x 
3. Is the differential equation given by 
2
d dy
x1
dx dx
? ? ? ?
? ? ?
? ? ? ?
? ? ? ?
, linear or nonlinear. Give 
reason. 
4. Find the angle between following pairs of line 
x 4 y 1 z 3 x 1 y 4 z 5
and
3 5 4 1 1 2
? ? ? ? ? ?
? ? ? ? 
 
OR 
 
Find the angle between following pairs of line 
x 1 y 2 z 3 x 3 y 5 z 1
and
2 3 3 1 8 4
? ? ? ? ? ?
? ? ? ?
??
 
 
 
 
 
 
  
 
CBSE XII | Mathematics 
Sample Paper – 9  
 
     
SECTION – B  
 
5.  Consider the function f: R+ ? [4, 8) defined by f(x) = x² + 4, where R+ is the set of all 
non-negative real numbers. Show that f is invertible. Also find the inverse of f. 
6.  If A = diag (1 -1 2) and B = diag (2 3 -1), find A + B, 3A + 4B. 
7.  Evaluate: 
 
x
x 2x
e
dx.
5 4e e
?
??
 
8.  Evaluate: 
? ?
? ?
x
3
x 4 e
dx.
x2
?
?
?
 
OR 
Evaluate: 
2
3
x
dx
1x
?
?
 
 
9.  Form the differential equation y
2
 = m(a
2
 - x
2
) by eliminating parameters m and a 
10.  Find p, if the points (1, 1, p)  and (-3, 0, 1) are equidistant from the plane whose equation is  
r. 3i 4j 12k 13 0
 
OR 
Prove that: [a b,b c,c a] 2 [a b c] ? ? ? ? 
11. The probability that a student entering a university graduates is 0.4. Find the 
probability that out of 3 students of the university: 
i. None will graduate 
ii. Only one will graduate 
12.  A bag contains 5 white and 3 black balls and another bag contains 3 white and 4 
black balls. A ball is drawn from the first bag and without seeing its colour, is put in 
the second bag. Find the probability that if now a ball is drawn from the second bag, 
it is black in colour. 
OR 
  
 
CBSE XII | Mathematics 
Sample Paper – 9  
 
     
A doctor is to visit a patient. Form past experience, it is known that the probabilities 
that he will come by train, bus, scooter or by other means of transport are 
respectively
3 1 1 2
, , and
10 5 10 5
. The probabilities that he will be late are 
1 1 1
, and
4 3 12
if 
he comes by train, bus and scooter respectively. But if he comes by other means of 
transport, then he will not be late. When he arrives, he is late. What is the 
probability that the doctor came by train? 
 
SECTION – C  
 
13.  
(i) If f: N ? Z s.t f(x) = x and g: Z ? Z s.t g(x) = |x|.  
      Show that gof is injective but g is not. 
(ii) If f: N ? N s.t f(x) = x + 1 and g: N ? N s.t g(x) =
x 1 if x 1
1 if x 1
?? ?
?
?
?
.  
       Show that g of is subjective but f is not. 
 
OR 
Show that the function f :R R ? defined by 
2x 1
f(x) , x R
3
?
?? is one-one and 
onto function. Also find the inverse of the function
 
f. 
 
14. Solve the equation.  
sin
-1
 (1 – x) – 2 sin
-1
 x = 
2
?
 
15. ??
23
23
23
x x 1+x
If x, y, and z are different  and y y 1+y 0; show that xyz = 1 
z z 1+z
 
16. Differentiate 
x
x
x w.r.t. x 
OR 
 
If 
? ? ? ?
tanx secx dy
y sinx cosx ,find
dx
?? 
 
  
 
CBSE XII | Mathematics 
Sample Paper – 9  
 
     
17. Differentiate 
2
cot x
2
2x 3
x
x x 2
?
?
??
w.r.t. x 
18. Find the interval in which the function 
4sin
y ,0 ,
2 cos
?
? ? ? ? ? ? ?
??
is an increasing 
function of ?. 
19. Evaluate: 
2
42
x
dx
x x 2
 
20. Evaluate: 
? ?
2x 2
0
x e dx
?
? using integral as limit of sums. 
21. Solve the initial value problem: (x + y + 1)
2
dy = dx, y(-1) = 0 
 
OR 
 
Solve the initial value problem: (x - y)(dy + dx) =dx – dy , y(0) = -1 
22. Let 
ˆ ˆ ˆ ˆ ˆ ˆ ˆ ˆ ˆ
a i 4j 2k, b 3i 2j 7k and c 2i j 4k ? ? ? ? ? ? ? ? ? . Find a vector d which is 
perpendicular to both a and b and c.d 15 ? . 
23.  Find the value of ? so that the lines, 
1 x y 2 z 3 x 1 y 1 6 z
and
3 2 2 3 1 7
? ? ? ? ? ?
? ? ? ?
??
  
are perpendicular to each other.  
 
SECTION – D 
 
24. If 
1 1 0
A 2 1 3
1 2 1
?? ??
??
?
??
??
??
and 
1 2 3
B 2 1 3
011
??
??
?
??
??
??
, show that ( A + B )
T
 = A
T
 + B
T
 
OR 
If 
1 1 1
A 2 2 3
1 0 2
? ??
??
??
??
?? ?
??
and 
4 2 1
B 1 1 1
2 1 0
?? ??
??
??
??
?? ?
??
, find AB and BA. 
 
Page 5


  
 
CBSE XII | Mathematics 
Sample Paper – 9  
 
  www.topperlearning.com  1 
Mathematics 
Class XII 
Sample Paper – 9 
Time: 3 hours                    Total Marks: 100 
 
1. All questions are compulsory. 
2. The question paper consist of 29 questions divided into three sections A, B, C and D. 
Section A comprises of 4 questions of one mark each, section B comprises of 8 
questions of two marks each, section C comprises of  11 questions of four marks 
each and section D comprises of 6 questions of six marks each. 
3. Use of calculators is not permitted. 
 
SECTION – A 
 
1. Write the element which is denoted by a32 in the given matrix 
1 16 8 9
7 5 3 2
4 10 6 11
??
??
??
??
??
  
 
2. Differentiate sin (cos x) w.r.t. x 
3. Is the differential equation given by 
2
d dy
x1
dx dx
? ? ? ?
? ? ?
? ? ? ?
? ? ? ?
, linear or nonlinear. Give 
reason. 
4. Find the angle between following pairs of line 
x 4 y 1 z 3 x 1 y 4 z 5
and
3 5 4 1 1 2
? ? ? ? ? ?
? ? ? ? 
 
OR 
 
Find the angle between following pairs of line 
x 1 y 2 z 3 x 3 y 5 z 1
and
2 3 3 1 8 4
? ? ? ? ? ?
? ? ? ?
??
 
 
 
 
 
 
  
 
CBSE XII | Mathematics 
Sample Paper – 9  
 
     
SECTION – B  
 
5.  Consider the function f: R+ ? [4, 8) defined by f(x) = x² + 4, where R+ is the set of all 
non-negative real numbers. Show that f is invertible. Also find the inverse of f. 
6.  If A = diag (1 -1 2) and B = diag (2 3 -1), find A + B, 3A + 4B. 
7.  Evaluate: 
 
x
x 2x
e
dx.
5 4e e
?
??
 
8.  Evaluate: 
? ?
? ?
x
3
x 4 e
dx.
x2
?
?
?
 
OR 
Evaluate: 
2
3
x
dx
1x
?
?
 
 
9.  Form the differential equation y
2
 = m(a
2
 - x
2
) by eliminating parameters m and a 
10.  Find p, if the points (1, 1, p)  and (-3, 0, 1) are equidistant from the plane whose equation is  
r. 3i 4j 12k 13 0
 
OR 
Prove that: [a b,b c,c a] 2 [a b c] ? ? ? ? 
11. The probability that a student entering a university graduates is 0.4. Find the 
probability that out of 3 students of the university: 
i. None will graduate 
ii. Only one will graduate 
12.  A bag contains 5 white and 3 black balls and another bag contains 3 white and 4 
black balls. A ball is drawn from the first bag and without seeing its colour, is put in 
the second bag. Find the probability that if now a ball is drawn from the second bag, 
it is black in colour. 
OR 
  
 
CBSE XII | Mathematics 
Sample Paper – 9  
 
     
A doctor is to visit a patient. Form past experience, it is known that the probabilities 
that he will come by train, bus, scooter or by other means of transport are 
respectively
3 1 1 2
, , and
10 5 10 5
. The probabilities that he will be late are 
1 1 1
, and
4 3 12
if 
he comes by train, bus and scooter respectively. But if he comes by other means of 
transport, then he will not be late. When he arrives, he is late. What is the 
probability that the doctor came by train? 
 
SECTION – C  
 
13.  
(i) If f: N ? Z s.t f(x) = x and g: Z ? Z s.t g(x) = |x|.  
      Show that gof is injective but g is not. 
(ii) If f: N ? N s.t f(x) = x + 1 and g: N ? N s.t g(x) =
x 1 if x 1
1 if x 1
?? ?
?
?
?
.  
       Show that g of is subjective but f is not. 
 
OR 
Show that the function f :R R ? defined by 
2x 1
f(x) , x R
3
?
?? is one-one and 
onto function. Also find the inverse of the function
 
f. 
 
14. Solve the equation.  
sin
-1
 (1 – x) – 2 sin
-1
 x = 
2
?
 
15. ??
23
23
23
x x 1+x
If x, y, and z are different  and y y 1+y 0; show that xyz = 1 
z z 1+z
 
16. Differentiate 
x
x
x w.r.t. x 
OR 
 
If 
? ? ? ?
tanx secx dy
y sinx cosx ,find
dx
?? 
 
  
 
CBSE XII | Mathematics 
Sample Paper – 9  
 
     
17. Differentiate 
2
cot x
2
2x 3
x
x x 2
?
?
??
w.r.t. x 
18. Find the interval in which the function 
4sin
y ,0 ,
2 cos
?
? ? ? ? ? ? ?
??
is an increasing 
function of ?. 
19. Evaluate: 
2
42
x
dx
x x 2
 
20. Evaluate: 
? ?
2x 2
0
x e dx
?
? using integral as limit of sums. 
21. Solve the initial value problem: (x + y + 1)
2
dy = dx, y(-1) = 0 
 
OR 
 
Solve the initial value problem: (x - y)(dy + dx) =dx – dy , y(0) = -1 
22. Let 
ˆ ˆ ˆ ˆ ˆ ˆ ˆ ˆ ˆ
a i 4j 2k, b 3i 2j 7k and c 2i j 4k ? ? ? ? ? ? ? ? ? . Find a vector d which is 
perpendicular to both a and b and c.d 15 ? . 
23.  Find the value of ? so that the lines, 
1 x y 2 z 3 x 1 y 1 6 z
and
3 2 2 3 1 7
? ? ? ? ? ?
? ? ? ?
??
  
are perpendicular to each other.  
 
SECTION – D 
 
24. If 
1 1 0
A 2 1 3
1 2 1
?? ??
??
?
??
??
??
and 
1 2 3
B 2 1 3
011
??
??
?
??
??
??
, show that ( A + B )
T
 = A
T
 + B
T
 
OR 
If 
1 1 1
A 2 2 3
1 0 2
? ??
??
??
??
?? ?
??
and 
4 2 1
B 1 1 1
2 1 0
?? ??
??
??
??
?? ?
??
, find AB and BA. 
 
  
 
CBSE XII | Mathematics 
Sample Paper – 9  
 
     
25.  Show that the right circular cone of least curved surface and given volume has an 
altitude equal to 2 times the radius of the base. 
26.  Find the smaller of the two areas in which the circle x
2
 + y
2
 = 2a
2
 is divided by the 
parabola y
2
 = ax, a > 0. 
OR 
 
Find the area of the region {(x, y): y
2 
? 6x, 4x
2
 + 4y 
2
 ?  64} 
 
27. Find a point on the line
x 2 y 1 z 3
3 2 2
, which is at the distance of 32 units, from 
the point (1, 2, 3).  
OR 
 
Find the value of p, so that the lines 
1
1 x 7y 14 z 3
l:
3 p 2
? ? ?
?? and 
2
7 7x y 5 6 z
l:
3p 1 5
? ? ?
?? 
are perpendicular to each other. Also find the equations of a line passing through  
a point (3, 2, - 4) and parallel to line l1. 
 
28. A nutritionist has to develop a special diet using two foods P and Q. Each packet 
(containing 30g) of food P contains 12 units of calcium, 4 units of iron, 6 units of 
cholesterol and 6 units of vitamin A. Each packet of the same quantity of food Q 
contains 3 units of calcium, 20 units of iron, 4 units of cholesterol and 3 units of 
vitamin A. The diet requires at least 240 units of calcium, atleast 460 units of iron 
and atmost 300 units of cholesterol. How many packet of each food should be used 
to minimise the amount of vitamin A in the diet? What is the minimum amount of 
vitamin A? 
29. A bag contains 25 balls of which 10 are purple and the remaining are pink. A ball is 
drawn at random, its colour is noted and it is replaced. 6 balls are drawn in this way, 
find the probability that  
i. All balls were purple  
ii. Not more than 2 were pink 
iii. An equal number of purple and pink balls were drawn. 
iv. Atleast one ball was pink