C- PRACTISE PROBLEMS-1 13 AUGUST15

6.

7. If the equation has exactly 3 roots then the range of is

(a) (b)

(c) (d)

8. If are the real roots of the equation and are the roots of the equation

, then the maximum value of is (a) 1 (b) 2 (c) 3 (d) 4

9.The minimum value of the expression is

(a) (b)

(c) (d)

10. The range of the expression is

(a) (b) (c) (d)

11. If has roots then -COLUMN – I COLUMN – II

(a)If , then is

(p) 1

(b)If then is

(q) 2

(c)If then is

(r) 3

(d) If A, B, C satisfies the equation

then is

(s) 4

(t) 512.

13.

14.

15.