4 items are filed under this topic.
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The discriminant |
2010-01-17 |
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From Sonjonnia:
What is the value of the discriminant?
16x^=16x-4
Answered by Penny Nom. |
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Values of k for which k(x^2+2x+3) - 4x - 2 is never negative |
2007-06-29 |
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From claire:
Find the range of values of k for which k(x^2+2x+3) - 4x - 2 is never negative.
Answered by Harley Weston. |
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The roots of (x - k)(1-3x) + 1 = 0 |
2007-06-28 |
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From Claire:
Show that the roots of (x - k)(1-3x) + 1=0 are real and distinct for all real values of k. Hence, or otherwise, find the range of 9sin^2 r - 6sin r + 13
Answered by Harley Weston. |
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Discriminant |
2005-06-20 |
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From A student:
If a quadratic has real root, its discriminant b2-4ac>=0 Is there any similar condition or method by which you can find whether roots of a cubic equation are real or not?
Answered by Chris Fisher. |
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