You are Here: Home >< Maths

# C1 question on terminology

Announcements Posted on
Why bother with a post grad? Are they even worth it? Have your say! 26-10-2016
1. So, I was just thinking to myself, you know, as you do: if a question states an equation has real roots does that mean the discriminant is
or does it mean

It doesn't specify that it has equal / different real roots so it should be

Right?
2. (Original post by Kozmo)
So, I was just thinking to myself, you know, as you do: if a question states an equation has real roots does that mean the discriminant is
or does it mean

It doesn't specify that it has equal / different real roots so it should be

Right?
If it doesn't specify distinct roots then when it says a quadratic has real roots then the discriminant is since real and equal roots are still real roots.
3. (Original post by Kozmo)
So, I was just thinking to myself, you know, as you do: if a question states an equation has real roots does that mean the discriminant is
or does it mean

It doesn't specify that it has equal / different real roots so it should be
as if it is equal to zero it still has one root, which is still a real root
Spoiler:
Show
(Original post by Zacken)
x
4. Well yes, since equal roots would mean the discriminate is equal to zero.

5. (Original post by KaylaB)
Spoiler:
Show
There was a whole two minute gap.
6. (Original post by Zacken)
There was a whole two minute gap.
I think you'll find it was a one minute gap
Spoiler:
Show
and I had to edit my post multiple times because I accidentally deleted my reply when I quoted you
7. (Original post by Zacken)
If it doesn't specify distinct roots then when it says a quadratic has real roots then the discriminant is since real and equal roots are still real roots.
(Original post by KaylaB)
as if it is equal to zero it still has one root, which is still a real root
Spoiler:
Show
(Original post by sammyyrosee)
Well yes, since equal roots would mean the discriminate is equal to zero.

Yep, thought so, thanking you all!
8. (Original post by Kozmo)
Yep, thought so, thanking you all!
You're very welcome!

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: April 8, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Today on TSR

### University open days

Is it worth going? Find out here

Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read here first

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams