Iteration question Watch

dont know it
Badges: 9
Rep:
?
#1
Report Thread starter 1 week ago
#1
In this video: https://www.youtube.com/watch?time_c...&v=gfKu1ILeVdg , Jack Brown says you get a staircase if the gradient of the root is positive and a cobweb if it's negative, but then towards the end says it's possible to get both so I'm a bit confused, because in the example he gives at the end to show this has the gradient of the root being negative.
0
reply
mqb2766
Badges: 12
Rep:
?
#2
Report 1 week ago
#2
(Original post by dont know it)
In this video: https://www.youtube.com/watch?time_c...&v=gfKu1ILeVdg , Jack Brown says you get a staircase if the gradient of the root is positive and a cobweb if it's negative, but then towards the end says it's possible to get both so I'm a bit confused, because in the example he gives at the end to show this has the gradient of the root being negative.
Its only valid close to the root. So for the third one, the gradient is negative and less than one in magnitude close to the root (cobweb). But when you start further away where the gradient is positive, it looks like a staircase initially.
0
reply
dont know it
Badges: 9
Rep:
?
#3
Report Thread starter 1 week ago
#3
(Original post by mqb2766)
Its only valid close to the root. So for the third one, the gradient is negative and less than one in magnitude close to the root (cobweb). But when you start further away where the gradient is positive, it looks like a staircase initially.
Ahh so it's not solely determined by the gradient at the root, but also the gradient at the points on the curve. Is that right? And thank you.
0
reply
mqb2766
Badges: 12
Rep:
?
#4
Report 1 week ago
#4
Yes, the gradient at the root is local behaviour. It can do many things as you move significantly away.
(Original post by dont know it)
Ahh so it's not solely determined by the gradient at the root, but also the gradient at the points on the curve. Is that right? And thank you.
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
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

University open days

  • Cardiff University
    Undergraduate Open Day Undergraduate
    Wed, 27 Mar '19
  • University of Portsmouth
    Postgraduate and Part-Time Open Evenings Postgraduate
    Wed, 27 Mar '19
  • Middlesex University London
    Postgraduate Open Evening Postgraduate
    Wed, 27 Mar '19

How old were you when you first saw porn?

I've never seen it (133)
20.65%
Before I was 12 (219)
34.01%
13 (99)
15.37%
14 (77)
11.96%
15 (41)
6.37%
16 (19)
2.95%
17 (9)
1.4%
18 (6)
0.93%
Between the ages of 19 - 24 (11)
1.71%
Over 25 (2)
0.31%
12 (28)
4.35%

Watched Threads

View All
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