Error
There was an error loading the page.
The student is asked to identify the number of roots of a quadratic equation, and then to give the root or roots. There is a hint to calculate the discriminant, and then further hints with the formula for the discriminant and the decision to make based on its value.
Metadata
-
England schools
-
England university
-
Scotland schools
Taxonomy: mathcentre
Taxonomy: Kind of activity
Taxonomy: Context
Contributors
Feedback
From users who are members of Demos :
Christian Lawson-Perfect
|
said | Ready to use | 4 years, 9 months ago |
History
Christian Lawson-Perfect 4 years, 9 months ago
Gave some feedback: Ready to use
Christian Lawson-Perfect 4 years, 9 months ago
Published this.Christian Lawson-Perfect 4 years, 9 months ago
Created this.There is only one version of this question that you have access to.
There are 11 other versions that do you not have access to.
| Name | Type | Generated Value |
|---|
| root1 | integer |
4
|
||||
| root2 | integer |
4
|
||||
| a | number |
2
|
||||
| c1 | number |
2
|
||||
| c2 | number |
-16
|
||||
| c3 | number |
32
|
||||
| num_roots | integer |
1
|
||||
| discriminant | number |
0
|
Generated value: integer
4
→ Used by:
- c2
- c3
- num_roots
- root2
- "Enter the root" - Minimum accepted value
- "Enter the root" - Maximum accepted value
- "Enter the roots" → "$x_1$" - Minimum accepted value
- "Enter the roots" → "$x_1$" - Maximum accepted value
- "Enter the roots" → "$x_2$" - Minimum accepted value
- "Enter the roots" → "$x_2$" - Maximum accepted value
Use this tab to check that this question works as expected.
| Part | Test | Passed? |
|---|---|---|
| Number entry | ||
| Hasn't run yet | ||
| Number entry | ||
| Hasn't run yet | ||
| Gap-fill | ||
| Hasn't run yet | ||
| Number entry | ||
| Hasn't run yet | ||
| Number entry | ||
| Hasn't run yet | ||
| Number entry | ||
| Hasn't run yet | ||
| Information only | ||
| Information only |
This question is used in the following exams:
- Ann's copy of Numbas v5.0 by Ann Smith in Ann's workspace.
- My First Exam by Jamie Coventry in Jamie's workspace.
- Dmitri's copy of Numbas v5.0 by Dmitri Finkelshtein in Numbas Tricks.
- Copy of Numbas v5.0 by Jim Pettigrew in Numbas showcase.
- Roots by Catherine Palmer in SPIRIT Maths.
- Numbas v5.0 by Christian Lawson-Perfect in Demos.
- Kopy of Explore mode demo by Raul Duarte in kopiador.
- Explore mode demo by Christian Lawson-Perfect in Demos.