KnowledgeBin.org
Discussions
→ All Categories
You Ask
62
Physics, Chemistry and Maths
0
Physics Q & A
28
Chemistry Q & A
19
Mathematics Q & A
22
Indian Engineering Exams
0
IIT - JEE
27
AIEEE
18
BITSAT
14
Other exams
15
Activity
Sign In
An Open e-Library for Engineering Entrance Exams in India.
Mathematics Q & A
minima and maxima
Vote Up
0
Vote Down
shashank
November 2008
how to find minima and maxima of a func which is discontinious at a point
for ex:
f(x)=-2x x<0
3x+5 x>=0
find the existance of min or max at x=0
7 Comments
sorted by
Votes
Date Added
Vote Up
0
Vote Down
vaibhav_123
November 2008
Can u please explanin the question a bit, i didnt understand this: "f(x)=-2x x<0"
:?: :!: :idea: :|
Vote Up
0
Vote Down
Friction
November 2008
Hey .... maxima minima is not really defined for a non-differentiable function.
In this case , there is no absolute maximum .... function tends to infinity when x tends to -+ infinity
As for minimum , it may first come to mind that the it is zero . But the function never attains 0 , it is only a limit value.
Vote Up
0
Vote Down
vaibhav_123
November 2008
Sir can u please give me some links to understand Maxima and Minima better, its one topic which is sometimes very confusing!
:mrgreen:
Vote Up
0
Vote Down
ankita2
November 2008
Hey Vaibhav!
Know what..Maxima and Minima is not a very hard topic! Just get the basics right! :-)
here is one link which will really help u....just go throgh the Study Material thoroughly!
http://www.knowledgebin.org/kb/entry/712/
Vote Up
0
Vote Down
Jhumu
December 2008
hey f(x)=mod x .is it a differentiable function :?:
Vote Up
0
Vote Down
Aditi
December 2008
hey
@Jhumu
...I really like ur username ..JHUMU... has a nice ring to it !!!
newayz ... coming back to more serious stuff
I think f(x)=mod x is not differentiable at x =0.
For a function to be differentiable , it should be a smooth continuous function.
It would not be differentiable at x = 0. At x =0 , the function has a sharp point !!
Vote Up
0
Vote Down
Aditi
December 2008
Also Jhumu , go through
http://www.knowledgebin.org/kb/entry/712/
really helpful article .. It clears many concepts.
Add a Comment
Howdy, Stranger!
It looks like you're new here. If you want to ask questions, login using your Google or Facebok IDs!
Categories
All Discussions
205
You Ask
62
Physics, Chemistry and Maths
69
↳ Physics Q & A
28
↳ Chemistry Q & A
19
↳ Mathematics Q & A
22
Indian Engineering Exams
74
↳ IIT - JEE
27
↳ AIEEE
18
↳ BITSAT
14
↳ Other exams
15
In this Discussion
Aditi
December 2008
ankita2
November 2008
Friction
November 2008
Jhumu
December 2008
vaibhav_123
November 2008
This is a beta version of the new KnowledgeBin.org. Please provide your feedback here: http://bit.ly/knowledgebin
Share Me
Please share this topic with your friends. Click any of the icons below:
Top Posters
ankita2
73
priyanka
71
akhilkona
58
jimmy
50
alex1
46
saurabh
37
admin
33
Powered by Vanilla