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junior college 1 | H2 Maths
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can someone give me a detailed explanation on 7b(ii)? i dont understand the answer key provided
Date Posted: 3 months ago
Views: 69
Given: x < 0
Therefore 2x^2 + x + a >= 0
Discriminant <= 0
1^2 - 4(2)(a) <= 0, leading to a >= 1/8
Solution set: a belongs to [1/8, infinity)
Therefore 2x^2 + x + a >= 0
Discriminant <= 0
1^2 - 4(2)(a) <= 0, leading to a >= 1/8
Solution set: a belongs to [1/8, infinity)
See 1 Answer
done
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clear
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Hopefully this is right
Date Posted:
3 months ago
a >= 1/8 instead
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