Showing posts with label Inequalities. Show all posts
Showing posts with label Inequalities. Show all posts

Friday, 2 December 2011

Inequalities Part-2

06) If | x + (1/4)| > (7/4), then :      (a) x <    -3     or x > 2                     2      (b) x < -2 or x >  3                                  2      (c) -2 < x <  3                           2      (d) None of these

07) The shaded region represents:

       (a) 3x + 5y < 15, 5x + 2y > 10,x,y >0       (b) 3x + 5y < 15, 5x + 2y < 10,x,y >0       (c)3x + 5y >15, 5x + 2y > 10,x,y >0

08) If a > 0 and b<0, Ii follow that:      (a) (1/a) > (1/b)      (b) (1/a) < (1/b)      (c) (1/a) = (1/b)      (d) None of these

09) On solving the inequalities 6x + y > 18,       x + 4y > 12, 2x + y > 10, we get the       following situation :      (a) (0, 18), (12, 0), (4, 2), (7, 6)       (b) (3, 0), (0, 3), (4, 2), (7, 6)      (c) (5, 0), (0, 10), (4, 2), (7, 6)      (d) (0, 18), (12, 0), (4, 2) , (0, 0)            and (7, 6)


Inequalities Part-1


01) The solution of the inequality
       (5x- 2x)/3 < (x/6) - 5 is :
      (a) x > 8
      (b) x < 8
      (c) x = 8
      (d) None of these
02) For all λ  R, the line (2 +  λ )x
      + (3 -  λ ) y + 5 =0 passing through
       a fixed point, then the fixed point is:
      (a) (1, 1)
      (b) (-1, -1)
      (c) (1, -1)
      (d) (-1, 1)
03) Solution space of the inequalities 2x +
       y < 10 and x - y < 5:
       (i) includes the origin
      (ii) includes the point (4,3)
       which one is correct ?
     (a) Only (i)
     (b) Only (ii)
     (c) Only (i) and (ii)
     (d) None of the above
04) If | (3x - 4) / 4| < (5/12), the solution set
      is :
     (a) { x: (19 / 18) < x < (29 / 18)}
      (b){ x: (7 / 9) < x < (17 / 9)}
     (c) { x: (-29 / 18) < x < (-19 / 18)}
     (d) None of these
05) The shaded region represents :
 
 (a) x + y > 6, 2x - y > 0
  (b) x + y < 6, 2x - y > 0
  (c) x + y > 6, 2x- y < 0
(d) None of these