6 items are filed under this topic.
 |
|
|
|
|
|
|
|
|
The intersection of a curve and a line |
2018-03-08 |
|
From lola:
find the set of values of constant C for which the line y=x+c intersects the curve y=2 square root x at, at two distinct points
Answered by Penny Nom. |
|
|
|
|
|
|
The quadratic formula |
2013-01-03 |
|
From itsel:
Find the discriminant ans use it to determine the use the quadratic formula to solve the equasion -2x^2+3x+2=0
Answered by Penny Nom. |
|
|
|
|
|
|
The discriminant |
2010-01-17 |
|
From Sonjonnia:
What is the value of the discriminant?
16x^=16x-4
Answered by Penny Nom. |
|
|
|
|
|
|
Values of k for which k(x^2+2x+3) - 4x - 2 is never negative |
2007-06-29 |
|
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. |
|
|
|
|
|
|
The roots of (x - k)(1-3x) + 1 = 0 |
2007-06-28 |
|
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. |
|
|
|
|
|
|
Discriminant |
2005-06-20 |
|
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. |
|
|
