Question

All the values of m for which both roots of the equation x² - 2mx + m² - 1 = 0 are greater than - 2 but less than 4 lie in the interval

(a) m > 3

(b) -1 < m < 3

(c) 1 < m < 4

(d) -2 < m < 0

Answer 1

Correct option (b) -1 < m < 3

Explanation:

Since, both roots of equation x² - 2mx + m² - 1 = 0 are greater than - 2 but less than 4