# Andhra Pradesh Board Class 12 Math Sample Papers 2011

## Andhra Pradesh Board Sample Papers 2011 for Class 12 Math

SAMPLE QUESTION PAPER
MATHEMATICS
Time : 3 Hours                                                                         Max Marks : 75
Section – A
I. Very Short Answer Questions                                      10x2=20 Marks
Attempt all Questions. Each Question carries 2 marks.

1. If  x 2 + y 2 – 4x + 6y + c = 0 represents a circle with radius ‘6’, find the value of ‘c’.

2. Find the equation of the directix of the parabola 2x 2 + 7y = 0.  x 2   y2

3. Find the length of the latus rectum of the ellipse

4. Find the eccentricity of the hyperbola   x 2 – 4y 2 = 4

5. Find the distance between the two points in a plane whose polar
coordinates are (2, p/6) (3, p/4)

6. If y =              , then find y n. 2x + 5

7. Find    Ú   ÷1 + sin 2x dx e s i n-1 x

8. Find  Ú               dx ÷1 – x 24

9. Obtain Ú x ÷x 2– 1 dx 1

10. State the Simpson’s rule for Numerical Integration of a function f(x)
over the interval [a,b] by dividing [a,b] into n  sub-intervals.

Section – B
II. Short Answer Questions                                            5 x 4 = 20 Marks
Attempt any five questions.  Each question carries 4 marks

11. If the line y = mx + c touches the ellipse

12. Find the equations of the tangents shown drawn from (-2,1) to the
hyperbola     2x 2 – 3y 2 = 6.

13. Transform the polar equation r  cos 2
q = a (a>0), origin as pole and the   2
+ve axis as initial line, into Cartesian form.
log x

14. If y =  then show that x (-1) n –n                            1 1 1
yn =  log x – 1 –  x n+1 2 3 n

15. Evaluate x 6 – 1 dx 1 + x 2

16. Solve (x 2 + y 2 ) dx = 2 xy dy
dy 2x + y + 3

17. Solve       =
dx 2y + x + 1

Section – C
II. Long Answer Questions                                          5 x 7 = 35 Marks
Attempt any five questions.  Each question carries 7 marks

18. Find the equation of the pair of tangents drawn from (3,2) to the circle
x 2 + y  2 – 6x + 4y – 2 = 0

19. Find the equation of the circle passing through the points of
intersection of the circles x 2 + y 2 – 8x – 6y + 21 = 0,  x 2 + y 2 – 2x – 15
= 0 and the point (1,2).

20. Find the equation of the circle passing through the origin and coaxial
with the circles x 2 + y 2 – 6x + 4y – 8 = 0 and x 2 + y 2 – 2x + y + 4 = 0.

21.      Find the pole of the line x + y + 2 = 0 with respect to the parabola y 2  4x – 2y – 3 = 0. 3 sin x + cos x + 7

22.Evaluate          dx sin x + cos  x + 1 Ú Ú

23. Evaluate x 1 / 4    dx x 1 / 2 + 1

24. Find the area enclosed by the curves y = 3x and y = 6x – x 2 .

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