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Thread Subject:
MATLAB help required

Subject: MATLAB help required

From: Jai

Date: 15 Nov, 2009 07:42:03

Message: 1 of 16

Hi all,

I am totally new to MATLAB and unfortunately i have to submit my assignment to university, i am posting this problem statements here with a wish that someone will be ready to give helping hand to me. I have searched through the internet and never found any answer of the following problems so i am posting here.

I have been asked to create .m files for these problems and also create plot that can be shown in MATLAB environement for the second problem.

=====================================================
1.Determine the distance from the line y = x + 1 to the parabola y^2 = x. (hint: Let (x,y) be a point on the line and (w,z) a point on the parabola. you want to minimize (x-w)^2+(y-z)^2.)

2.f(x,y) = x^2 + y^3 - 3xy , -5<= x <= 5 , -5 <= y <=5
 a. Plot the function over the given rectangle.
 b. Plot some level curves in the rectangle.
 c. Calculate the function's first partial derivatives and use the CAS equation solver to find the critical points. How do the critical points relate to the level curves plotted in part b? Which critical points, if any, appear to give a saddle point? Give reasons for your answer.
 d. Calculate the function's second partial derivatives and find the discriminant fxxfyy-fxy^2.
 e. Using the max- ,min tests, classify the critical points found in part (c). Are you finding consistent with your discussion in part (c)?
===================================================

Can any of you provide me .m files in attachment?
mailto: jai_ur_wellwisher@yahoo.com

Awaiting for the response,
Regards,
Jai.

Subject: MATLAB help required

From: John D'Errico

Date: 15 Nov, 2009 10:26:02

Message: 2 of 16

"Jai " <jai_ur_wellwisher@yahoo.com> wrote in message <hdobcb$dcl$1@fred.mathworks.com>...
> Hi all,
>
> I am totally new to MATLAB and unfortunately i have to submit my assignment to university, i am posting this problem statements here with a wish that someone will be ready to give helping hand to me. I have searched through the internet and never found any answer of the following problems so i am posting here.
>
> I have been asked to create .m files for these problems and also create plot that can be shown in MATLAB environement for the second problem.
>

(snip)

>
> Can any of you provide me .m files in attachment?
> mailto: jai_ur_wellwisher@yahoo.com

So you have searched the internet, but have not
found anyone that has posted the answers to your
homework. Now you are asking someone else to
do your work for you.

It sounds like you have spent more time looking
for someone else to do your work for you than
it would have taken to do the work yourself.

Sheesh! Just sit down in front of the computer,
and learn something for once. You will never
learn until you start typing matlab code of your
own.

Subject: MATLAB help required

From: Joerg Buchholz

Date: 15 Nov, 2009 10:54:02

Message: 3 of 16

A wise man once said:

The going rate for homework is $400 per hour. A minimum of 10 hours. Payable in advance, in cash, small bills only.

Subject: MATLAB help required

From: Jai

Date: 15 Nov, 2009 13:59:02

Message: 4 of 16

Hey John,

If you can't find a gentle request in it, then it is your problem dear. It seems you don't have knowledge about parabola or plotting and that's why you are saying these words.

It is another way to show your superiority to the world. So, please stay away from my post. My post is genuine and i am just asking for a help as i don't know MATLAB, i am newbie and i am learning the MATLAB meanwhile but i have to submit my assignment next week.

Anyway, thank you for replying even if it didn't worth me.



"John D'Errico" <woodchips@rochester.rr.com> wrote in message <hdokvq$66t$1@fred.mathworks.com>...
> "Jai " <jai_ur_wellwisher@yahoo.com> wrote in message <hdobcb$dcl$1@fred.mathworks.com>...
> > Hi all,
> >
> > I am totally new to MATLAB and unfortunately i have to submit my assignment to university, i am posting this problem statements here with a wish that someone will be ready to give helping hand to me. I have searched through the internet and never found any answer of the following problems so i am posting here.
> >
> > I have been asked to create .m files for these problems and also create plot that can be shown in MATLAB environement for the second problem.
> >
>
> (snip)
>
> >
> > Can any of you provide me .m files in attachment?
> > mailto: jai_ur_wellwisher@yahoo.com
>
> So you have searched the internet, but have not
> found anyone that has posted the answers to your
> homework. Now you are asking someone else to
> do your work for you.
>
> It sounds like you have spent more time looking
> for someone else to do your work for you than
> it would have taken to do the work yourself.
>
> Sheesh! Just sit down in front of the computer,
> and learn something for once. You will never
> learn until you start typing matlab code of your
> own.

Subject: MATLAB help required

From: Jai

Date: 15 Nov, 2009 14:03:02

Message: 5 of 16

Hi Joerg,

Don't give your fingers much stress to type this quotes or idioms. I know each and everything what great men once said. OK?

Better, provide some real solution instead of typing a lecture.

"Joerg Buchholz" <buchholz@hs-bremen.de> wrote in message <hdomka$ror$1@fred.mathworks.com>...
> A wise man once said:
>
> The going rate for homework is $400 per hour. A minimum of 10 hours. Payable in advance, in cash, small bills only.

Subject: MATLAB help required

From: dpb

Date: 15 Nov, 2009 14:25:08

Message: 6 of 16

Jai wrote:
> Hey John,
>

> If you can't find a gentle request in it, then it is your problem
dear. It seems you don't have knowledge about parabola or plotting and
that's why you are saying these words.

...chuckle...

Otoh, you might do a little internet looking at John's previous postings
and decide about his level of knowledge...

--

Subject: MATLAB help required

From: John D'Errico

Date: 15 Nov, 2009 14:37:01

Message: 7 of 16

"Jai " <jai_ur_wellwisher@yahoo.com> wrote in message <hdp1f6$rti$1@fred.mathworks.com>...
> Hey John,
>
> If you can't find a gentle request in it, then it is your problem dear. It seems you don't have knowledge about parabola or plotting and that's why you are saying these words.
>
> It is another way to show your superiority to the world. So, please stay away from my post. My post is genuine and i am just asking for a help as i don't know MATLAB, i am newbie and i am learning the MATLAB meanwhile but i have to submit my assignment next week.

No. You obviously have not bothered trying to do
your homework, but you are very willing to plead
for someone else to do it for you.

Subject: MATLAB help required

From: Matt Fig

Date: 15 Nov, 2009 14:42:01

Message: 8 of 16

Try to figure it out. When you get stuck, come back with a specific MATLAB question. You might then get help, if you haven't burned up all the good will normally allotted to beginners around here.
Every one who is regularly on this NG didn't know MATLAB at one point in life, but learned it by trying, failing, and trying again.

P.S.
I knew guys like you in Grad school. They would spend 3-4 hours looking on Google and even writing professors in far off universities to find the answers to HW problems instead of spending that time just figuring it out. Most of them did not fair well after graduation.

Subject: MATLAB help required

From: Jai

Date: 15 Nov, 2009 14:43:01

Message: 9 of 16

Just stay away dear. Don't give me lecture ok? I am meanwhile learning to solve the issue. So, PLEEEEEEEEEEEEEEEEASE, STAY AWAY DUDE.

"John D'Errico" <woodchips@rochester.rr.com> wrote in message <hdp3md$e08$1@fred.mathworks.com>...
> "Jai " <jai_ur_wellwisher@yahoo.com> wrote in message <hdp1f6$rti$1@fred.mathworks.com>...
> > Hey John,
> >
> > If you can't find a gentle request in it, then it is your problem dear. It seems you don't have knowledge about parabola or plotting and that's why you are saying these words.
> >
> > It is another way to show your superiority to the world. So, please stay away from my post. My post is genuine and i am just asking for a help as i don't know MATLAB, i am newbie and i am learning the MATLAB meanwhile but i have to submit my assignment next week.
>
> No. You obviously have not bothered trying to do
> your homework, but you are very willing to plead
> for someone else to do it for you.

Subject: MATLAB help required

From: dpb

Date: 15 Nov, 2009 14:48:29

Message: 10 of 16

Jai wrote:
> Just stay away dear. Don't give me lecture ok? I am meanwhile
> learning to solve the issue. So, PLEEEEEEEEEEEEEEEEASE, STAY AWAY DUDE.
...

Done.

--

Subject: MATLAB help required

From: Jai

Date: 15 Nov, 2009 14:53:01

Message: 11 of 16

Thank you for your time writing your lectures here.

And i am ready to heard some more lectures. It shows you guys are more interested to give lectures instead of giving your help or may be your profiles are wrong here that display you are like a scientists working for NASA.

Anyway, i have resolved my first problem for your kind information. If anybody is still interested, you can give help for second problem otherwise go to hell but do not give lectures. OK?

"Matt Fig" <spamanon@yahoo.com> wrote in message <hdp3vp$234$1@fred.mathworks.com>...
> Try to figure it out. When you get stuck, come back with a specific MATLAB question. You might then get help, if you haven't burned up all the good will normally allotted to beginners around here.
> Every one who is regularly on this NG didn't know MATLAB at one point in life, but learned it by trying, failing, and trying again.
>
> P.S.
> I knew guys like you in Grad school. They would spend 3-4 hours looking on Google and even writing professors in far off universities to find the answers to HW problems instead of spending that time just figuring it out. Most of them did not fair well after graduation.

Subject: MATLAB help required

From: Jai

Date: 15 Nov, 2009 16:23:01

Message: 12 of 16

Hello So Called Scientists / Specialists,

I have resolved Question 2 (a) now and working for Question 2 (b). Still looking for any help IF you can provide, otherwise THANK YOU VERY MUCH to open such a forum which is not useful.

And thanks for tagging me as an arrogant. But who made me arrogant?

And yes, give some more lectures that is what people like to give here because it is free of cost right?
"Jai " <jai_ur_wellwisher@yahoo.com> wrote in message <hdp4kd$bc6$1@fred.mathworks.com>...
> Thank you for your time writing your lectures here.
>
> And i am ready to heard some more lectures. It shows you guys are more interested to give lectures instead of giving your help or may be your profiles are wrong here that display you are like a scientists working for NASA.
>
> Anyway, i have resolved my first problem for your kind information. If anybody is still interested, you can give help for second problem otherwise go to hell but do not give lectures. OK?
>
> "Matt Fig" <spamanon@yahoo.com> wrote in message <hdp3vp$234$1@fred.mathworks.com>...
> > Try to figure it out. When you get stuck, come back with a specific MATLAB question. You might then get help, if you haven't burned up all the good will normally allotted to beginners around here.
> > Every one who is regularly on this NG didn't know MATLAB at one point in life, but learned it by trying, failing, and trying again.
> >
> > P.S.
> > I knew guys like you in Grad school. They would spend 3-4 hours looking on Google and even writing professors in far off universities to find the answers to HW problems instead of spending that time just figuring it out. Most of them did not fair well after graduation.

Subject: MATLAB help required

From: Joerg Buchholz

Date: 15 Nov, 2009 17:44:01

Message: 13 of 16

"Jai " <jai_ur_wellwisher@yahoo.com> wrote in message
> PLEEEEEEEEEEEEEEEEASE, STAY AWAY DUDE.

LEAVE BRITNEY ALONE!

(Sorry, couldn't resist ;-))

Subject: MATLAB help required

From: Jai

Date: 15 Nov, 2009 18:00:04

Message: 14 of 16

Whatever....

"Joerg Buchholz" <buchholz@hs-bremen.de> wrote in message <hdpel1$jke$1@fred.mathworks.com>...
> "Jai " <jai_ur_wellwisher@yahoo.com> wrote in message
> > PLEEEEEEEEEEEEEEEEASE, STAY AWAY DUDE.
>
> LEAVE BRITNEY ALONE!
>
> (Sorry, couldn't resist ;-))

Subject: MATLAB help required

From: Steven Lord

Date: 16 Nov, 2009 03:13:09

Message: 15 of 16


"Jai " <jai_ur_wellwisher@yahoo.com> wrote in message
news:hdobcb$dcl$1@fred.mathworks.com...
> Hi all,
>
> I am totally new to MATLAB and unfortunately i have to submit my
> assignment to university, i am posting this problem statements here with a
> wish that someone will be ready to give helping hand to me. I have
> searched through the internet and never found any answer of the following
> problems so i am posting here.

*snip*

In this thread, you've asked people not to "lecture" you. The _reason_ you
received those "lectures" is because of the way you asked for help.

In the past, we've had LOTS of people post their homework questions here and
ask blatantly for someone to do the problem for them. John and Matt have
been here long enough that they've developed a very low tolerance for this
behavior. Your request for help sounded a lot like one of those requests
for "help", which is why they gave you what you felt was a lecture.

But Matt gave you a good suggestion -- show what you've done and ask a
_specific_ question about where you're stuck and I think you'll find plenty
of people, John and Matt among them, willing to _help_ you by answering your
questions.

--
Steve Lord
slord@mathworks.com
comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ

Subject: MATLAB help required

From: Jai

Date: 16 Nov, 2009 13:56:02

Message: 16 of 16

Hi All,

Now this is a way to reply to someone.
I really appreciate your words, suggestion and behavior Mr. Steve. I was totally unaware what is going on in this newsgroup / forum and how people are asking for the help. My request was genuine and that's why i have asked for it. It doesn't mean i was not working on the problem as after all its my problem and my assignment right?

Anyway, i am not a math geek or not interested to make career in mathematics. Its just our subject and my professor suggested me to look after your newsgroup for any help required.

After getting to know about your problems in past regarding students, i would suggest create a seperate group for students only and provide the answers by taking some charge, so only serious people can get the answer of their questions.

My problem is still there "unresolved" but now i will never ask any help from these people. My Question 2(b) is resolved but trying my level best to resolve Question 2(c) which seems very tough as i am also not good in mathematics, but i will manage it by my own.

Anyway, I really show some qualities and a gentleman in you and i appreciate your suggestion and statements. Also, thank you for clearing my doubt regarding the behavior of the people here.

Regards,

"Steven Lord" <slord@mathworks.com> wrote in message <hdqfu3$7ef$1@fred.mathworks.com>...
>
> "Jai " <jai_ur_wellwisher@yahoo.com> wrote in message
> news:hdobcb$dcl$1@fred.mathworks.com...
> > Hi all,
> >
> > I am totally new to MATLAB and unfortunately i have to submit my
> > assignment to university, i am posting this problem statements here with a
> > wish that someone will be ready to give helping hand to me. I have
> > searched through the internet and never found any answer of the following
> > problems so i am posting here.
>
> *snip*
>
> In this thread, you've asked people not to "lecture" you. The _reason_ you
> received those "lectures" is because of the way you asked for help.
>
> In the past, we've had LOTS of people post their homework questions here and
> ask blatantly for someone to do the problem for them. John and Matt have
> been here long enough that they've developed a very low tolerance for this
> behavior. Your request for help sounded a lot like one of those requests
> for "help", which is why they gave you what you felt was a lecture.
>
> But Matt gave you a good suggestion -- show what you've done and ask a
> _specific_ question about where you're stuck and I think you'll find plenty
> of people, John and Matt among them, willing to _help_ you by answering your
> questions.
>
> --
> Steve Lord
> slord@mathworks.com
> comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ
>

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