JEE Main2019Math
Q.
The number of integral values of m for which the quadratic expression, (1 + 2m)x2 – 2(1 + 3m)x + 4(1 + m), xR, is always positive, is:
- A
8
- B
3
- C
6
- D
7
Solution
The number of integral values of m for which the quadratic expression, (1 + 2m)x2 – 2(1 + 3m)x + 4(1 + m), xR, is always positive, is:
8
3
6
7