2.4 The Discriminant

Question 14

The equation $kx^2 + 6kx + a = 0$ , where $k\,$ is a non-zero constant and $a\,$ is a positive constant, has no real roots if and only if $0<k<49\displaystyle 0<k<\frac{4}{9}$ .

Find the value of $a$ .

[4]

2.4 The Discriminant

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Question 14

The equation $kx^2 + 6kx + a = 0$ , where $k\,$ is a non-zero constant and $a\,$ is a positive constant, has no real roots if and only if $0<k<49\displaystyle 0<k<\frac{4}{9}$ .

Find the value of $a$ .

[4]

2.4 The Discriminant

Question 14

Markscheme

2.4 The Discriminant

Question 14

Markscheme

2.4 The Discriminant

Question 14

2.4 The Discriminant Questions

2.4 The Discriminant

Question 14

2.4 The Discriminant Questions