The Student Room Group
Uni students - Complete our survey >>
Uni students - Complete our survey >>
Uni students - Complete our survey >>

This discussion is now closed.

Check out other Related discussions

what does 'equal roots' mean?

i'm sure this has been asked before, but i cannot get the search to work.
it's a c1 question where f(x) has equal roots. help appreciated.

:smile:
Reply 1
Avatar for carrotboy
carrotboy
2
If the function f(x) is a quadratic or has a power higher than 1, there are two roots. Both of these roots are therefore equal.

for example, the roots of
x^2 + 6x +9

are x = 3
and x = 3
- equal roots
b^2-4ac = 0
Reply 3
Avatar for jumblebumble
jumblebumble
OP
10
Ok, thanks. :smile:
Reply 4
Avatar for Mithra
Mithra
2
Basically the graph of the function touches the x axis but doesn't cross it
Reply 5
Avatar for harr
harr
15
Mithra
Basically the graph of the function touches the x axis but doesn't cross it
Although it can be useful to consider a geometric interpretation, this is a graph of a function with equal roots.
Reply 6
Avatar for Mithra
Mithra
2
harr
Although it can be useful to consider a geometric interpretation, this is a graph of a function with equal roots.


doh, forgot about graphs like that :p:. I was just thinking of a quadratic moved upwards since someone mentioned quadratic roots formula :biggrin:.

Related discussions

Latest

Trending

Trending

Articles for you