If the roots of x^2-2mx m^2-1=0 between -2 and 4,then 1. -3 less than ...
If the roots of x^2-2mx m^2-1=0 between -2 and 4,then 1. -3 less than ...
To find the range of values for m that satisfy the given conditions, we need to consider the range of the roots of the quadratic equation x^2 - 2mx + (m^2 - 1) = 0 within the interval [-2, 4].
1. -3 ≤ m ≤ 3:
If the roots of the quadratic equation lie between -2 and 4, we can write the condition as -2 < r1="" />< r2="" />< 4,="" where="" r1="" and="" r2="" are="" the="" roots="" of="" the="" />
Let's find the discriminant of the quadratic equation: D = b^2 - 4ac.
In this case, a = 1, b = -2m, and c = m^2 - 1.
D = (-2m)^2 - 4(1)(m^2 - 1)
D = 4m^2 - 4m^2 + 4
D = 4
Since the discriminant is positive, the roots are real and distinct.
The sum of the roots is given by: r1 + r2 = -b/a = 2m/1 = 2m.
The product of the roots is given by: r1 * r2 = c/a = (m^2 - 1)/1 = m^2 - 1.
From the condition -2 < r1="" />< r2="" />< 4,="" we="" have="" -2="" />< r1="" +="" r2="" />< />
Substituting the values, we get -2 < 2m="" />< />
Dividing the inequality by 2, we have -1 < m="" />< />
Therefore, the range of m that satisfies this condition is -1 < m="" />< />
2. -2 ≤ m ≤ 5:
Using the same approach as above, the sum of the roots is: r1 + r2 = 2m, and the product of the roots is: r1 * r2 = m^2 - 1.
From the condition -2 < r1="" />< r2="" />< 4,="" we="" have="" -2="" />< 2m="" />< />
Dividing the inequality by 2, we have -1 < m="" />< />
Therefore, the range of m that satisfies this condition is -1 < m="" />< />
3. -1 ≤ m ≤ 5:
Again, the sum of the roots is: r1 + r2 = 2m, and the product of the roots is: r1 * r2 = m^2 - 1.
From the condition -2 < r1="" />< r2="" />< 4,="" we="" have="" -2="" />< 2m="" />< />
Dividing the inequality by 2, we have -1 < m="" />< />
Therefore, the range of m that satisfies this condition is -1 < m="" />< />
4. -1 ≤ m ≤ 3:
Using the same approach as above, the sum of the roots is: r1 + r2 = 2m, and the product of the roots is: r1 * r2 = m^2 - 1.
From the condition -2 < r1="" />< r2="" />< 4,="" we="" have="" -2="" />< 2m="" />< />
Dividing the inequality by 2, we have -1 < m="" />< />
Therefore, the range of m