011-40705070  or  
Call me
Download our Mobile App
Select Board & Class
  • Select Board
  • Select Class
General Instructions:
(i) All questions are compulsory.
(ii) This question paper contains 29 questions.
(iii) Questions 1- 4 in Section A are very short-answer type questions carrying 1 mark each.
(iv) Questions 5-12 in Section B are short-answer type questions carrying 2 marks each.
(v) Questions 13-23 in Section C are long-answer I type questions carrying 4 marks each.
(vi) Questions 24-29 in Section D are long-answer II type questions carrying 6 marks each.
Question 1
  • Q1

    If a line makes angles 90° and 60° respectively with the positive directions of x and y axes, find the angle which it makes with the positive direction of z-axis. 

    VIEW SOLUTION

  • Q2

    Evaluate : 233x dx. 

    VIEW SOLUTION

  • Q3

    If A is a 3 × 3 invertible matrix, then what will be the value of k if det(A–1) = (det A)k. 

    VIEW SOLUTION

  • Q4

    Determine the value of the constant 'k' so that function fx=kxx, if x < 03,if x  0 is continuous at x = 0. 

    VIEW SOLUTION

  • Q5

    Prove that if E and F are independent events, then the events E and F' are also independent. 

    VIEW SOLUTION

  • Q6

    A small firm manufactures necklaces and bracelets. The total number of necklaces and bracelets that it can handle per day is at most 24. It takes one hour to make a bracelet and half an hour to make a necklace. The maximum number of hours available per day is 16. If the profit on a necklace is Rs 100 and that on a bracelet is Rs 300. Formulate on L.P.P. for finding how many of each should be produced daily to maximize the profit?
    It is being given that at least one of each must be produced. 

    VIEW SOLUTION

  • Q7

    Find dxx2+4x+8 

    VIEW SOLUTION

  • Q8

    Show that all the diagonal elements of a skew symmetric matrix are zero. 

    VIEW SOLUTION

  • Q9

    Find dydx at  x=1, y=π4  if sin2y+cos xy = K. 

    VIEW SOLUTION

  • Q10

    Show that the function fx=4x3-18x2+27x-7 is always increasing on . 

    VIEW SOLUTION

  • Q11

    Find the vector equation of the line passing through the point A(1, 2, –1) and parallel to the line 5x – 25 = 14 – 7y = 35z. 

    VIEW SOLUTION

  • Q12

    For the curve y = 5x – 2x3, if x increases at the rate of 2 units/sec, then fine the rate of change of the slope of the curve when x = 3. 

    VIEW SOLUTION

  • Q13

    Evaluate : 0πx sin x1+cos2xdx
     

    OR

    Evaluate : 03/2x sin πxdx 

    VIEW SOLUTION

  • Q14

    Prove that x2 – y2 = c(x2 + y2)2 is the general solution of the differential equation (x3 – 3xy2)dx = (y3 – 3x2y)dy, where C is parameter. 

    VIEW SOLUTION

  • Q15

    Let a=i^+j^+k^,b=i^ and c=c1i^+c2j^+c3k^, then

    (a) Let c1 = 1 and c2 = 2, find c3 which makes a,b and c coplanar.

    (b) If c2 = –1 and c3 = 1, show that no value of c1 can make a,b and c coplanar. 

    VIEW SOLUTION

  • Q16

    Often it is taken that a truthful person commands, more respect in the society. A man is known to speak the truth 4 out of 5 times. He throws a die and reports that it is a six. Find the probability that it is actually a six.
    Do you also agree that the value of truthfulness leads to more respect in the society? 

    VIEW SOLUTION

  • Q17

    Prove that tan π4+12cos-1ab+tanπ4-12cos-1ab=2ba 

    VIEW SOLUTION

  • Q18

    Using properties of determinants, prove that xx+yx+2yx+2yxx+yx+yx+2yx=9y2x+y.
     

    OR

    Let A=2-134, B=5274, C=2538, find a matrix D such that CD − AB = O. 

    VIEW SOLUTION

  • Q19

    Differentiate the function sin xx+sin-1x with respect to x.

    OR

    If xmyn=x+ym+n, prove that d2ydx2=0. 

    VIEW SOLUTION

  • Q20

    The random variable X can take only the values 0, 1, 2, 3. Given that P(2) = P(3) = p and P(0) = 2P(1). If Σpixi2=2Σpixi, find the value of p. 

    VIEW SOLUTION

  • Q21

    Using vectors find the area of triangle ABC with vertices A(1, 2, 3), B(2, −1, 4) and C(4, 5, −1). 

    VIEW SOLUTION

  • Q22

    Solve the following L.P.P. graphically
     

    Maximise Z = 4x + y
    Subject to following constraints
     x + y ≤ 50,
     
    3x + y ≤ 90,
     
     x ≥ 10
     
     x, y ≥ 0
     

    VIEW SOLUTION

  • Q23

    Find: 2xx2+1 x4+4dx 

    VIEW SOLUTION

  • Q24

    Using integration, find the area of region bounded by the triangle whose vertices are (–2, 1), (0, 4) and (2, 3).
     

    OR

    Find the area bounded by the circle x2 + y2 = 16 and the line 3y=x in the first quadrant, using integration. 

    VIEW SOLUTION

  • Q25

    Solve the differential equation xdydx+y=x cos x + sin x, given that y = 1 when x=π2 

    VIEW SOLUTION

  • Q26

    Find the equation of the plane through the line of intersection of r·2i^-3j^+4k^=1 and r·i^-j^+4=0 and perpendicular to the plane r·2i^-j^+k^+8=0. Hence find whether the plane thus obtained contains the line x − 1 = 2y − 4 = 3z − 12.
     

    OR
     
    Find the vector and Cartesian equations of a line passing through (1, 2, –4) and perpendicular to the two lines x-83=y+19-16=z-107 and x-153=y-298=z-5-5. 

    VIEW SOLUTION

  • Q27

    Consider f : R+ → [−5, ∞), given by f(x) = 9x2 + 6x − 5. Show that f is invertible with f-1yy+6-13.

    Hence Find
    (i) f−1(10)
    (ii) y if f-1y=43,

    where R+ is the set of all non-negative real numbers.


    OR

    Discuss the commutativity and associativity of binary operation '*' defined on A = Q − {1} by the rule a * b = ab + ab for all, a, b ∊ A. Also find the identity element of * in A and hence find the invertible elements of A. 

    VIEW SOLUTION

  • Q28

    A metal box with a square base and vertical sides is to contain 1024 cm3. The material for the top and bottom costs Rs 5 per cm2 and the material for the sides costs Rs 2.50 per cm2. Find the least cost of the box. 

    VIEW SOLUTION

  • Q29

    If A=23104-6569-20, find A–1. Using A–1 solve the system of equations 2x+3y+10z=2; 4x-6y+5z=5;6x+9y-20z=-4 

    VIEW SOLUTION

Board Papers 2014, Board Paper Solutions 2014, Sample Papers for CBSE Board, CBSE Boards Previous Years Question Paper, Board Exam Solutions 2014, Board Exams Solutions Maths, Board Exams Solutions English, Board Exams Solutions Hindi, Board Exams Solutions Physics, Board Exams Solutions Chemistry, Board Exams Solutions Biology, Board Exams Solutions Economics, Board Exams Solutions Business Studies, Maths Board Papers Solutions, Science Board Paper Solutions, Economics Board Paper Solutions, English Board Papers Solutions, Physics Board Paper Solutions, Chemistry Board Paper Solutions, Hindi Board Paper Solutions, Political Science Board Paper Solutions, Answers of Previous Year Board Papers, Delhi Board Paper Solutions, All India Board Papers Solutions, Abroad/Foreign Board Paper Solutions, cbse class 12 board papers, Cbse board papers with solutions, CBSE solved Board Papers, ssc board papers.

close