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secondary 3 | E Maths
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Date Posted: 4 years ago
Views: 568
Sorry .. the inequality sign is inclusive.
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Good afternoon Tarah! We can split the “never negative” into two cases:
1. Equation equals zero. However, since the curve cannot go into the negative y regions, at best there is only one real root, so b2 - 4ac = 0.
2. Equation is more than zero, which will never have real roots, so b2 - 4ac < 0.
Combining both, b2 - 4ac <= 0.
Let me know if you need more explanation.
1. Equation equals zero. However, since the curve cannot go into the negative y regions, at best there is only one real root, so b2 - 4ac = 0.
2. Equation is more than zero, which will never have real roots, so b2 - 4ac < 0.
Combining both, b2 - 4ac <= 0.
Let me know if you need more explanation.
Date Posted:
4 years ago
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One of the way is to complete the sq, and use of the y coordinate of the minimum point to look for k
Date Posted:
4 years ago
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