aominedaiki
Badges: 5
Rep:
?
#1
Report Thread starter 1 month ago
#1
Hi I'm trying this question on graphing a derivative function but am really stuck on how we would map out the inflection points.
Attached files
Last edited by aominedaiki; 1 month ago
0
reply
Rufus the red
Badges: 17
Rep:
?
#2
Report 1 month ago
#2
Please include the question.
0
reply
aominedaiki
Badges: 5
Rep:
?
#3
Report Thread starter 1 month ago
#3
(Original post by Rufus the red)
Please include the question.
Haha yes sorry, I have now edited the message and now have included the file.
0
reply
mqb2766
Badges: 18
Rep:
?
#4
Report 1 month ago
#4
(Original post by aominedaiki)
Haha yes sorry, I have now edited the message and now have included the file.
Just do 3 steps,i.e. piecewise constant. The derivative is undefined at the "knees".
Last edited by mqb2766; 1 month ago
0
reply
aominedaiki
Badges: 5
Rep:
?
#5
Report Thread starter 1 month ago
#5
(Original post by mqb2766)
Just do 3 steps,i.e. piecewise constant. The derivative is undefined at the "knees".
sorry but am just not getting it could u explain the steps please
0
reply
mqb2766
Badges: 18
Rep:
?
#6
Report 1 month ago
#6
(Original post by aominedaiki)
sorry but am just not getting it could u explain the steps please
You could just evaluate the gradient at a few points. You'd notice it's constant in the 3 (obvious?) sections.
0
reply
aominedaiki
Badges: 5
Rep:
?
#7
Report Thread starter 1 month ago
#7
(Original post by mqb2766)
You could just evaluate the gradient at a few points. You'd notice it's constant in the 3 (obvious?) sections.
Ah ok and for the straght line sections the function is undefined
0
reply
mqb2766
Badges: 18
Rep:
?
#8
Report 1 month ago
#8
(Original post by aominedaiki)
Ah ok and for the straght line sections the function is undefined
No. The gradient of the function in the straight line sections is constant. The gradient is undefined at the (2) points where it gives different values when you approach it from above or below.
Last edited by mqb2766; 1 month ago
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

Should there be a new university admissions system that ditches predicted grades?

No, I think predicted grades should still be used to make offers (707)
33.91%
Yes, I like the idea of applying to uni after I received my grades (PQA) (891)
42.73%
Yes, I like the idea of receiving offers only after I receive my grades (PQO) (394)
18.9%
I think there is a better option than the ones suggested (let us know in the thread!) (93)
4.46%

Watched Threads

View All
Latest
My Feed