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secondary 4 | A Maths
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PLEASE HELP
*Don’t forget to square the line eqn!
Since it only mentioned that the line MEETS the curve, we cannot deduce if the nature of the roots of the equation are two distinct roots or equal roots.
However, we can deduce that the roots must be REAL since the line and the curve MEETS.
Using the discriminant (b^2 - 4ac) for the simplified quadratic equation, set it greater than equal to zero; b^2 - 4ac >= 0
You will obtain an inequality with k as the unknown. Solve it by making k the subject of the inequality.
And there you go! Solved
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