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#26 2011-09-01 00:12:06
- anonimnystefy
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- From: Harlan's World
- Registered: 2011-05-23
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Re: Calculus problem.
hi Shiva
As my teacher has a huge superiority complex.
most teachers do.
bob isn't one of them.:D
Last edited by anonimnystefy (2011-09-01 00:12:39)
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#27 2011-09-01 00:13:17
- Bob
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Re: Calculus problem.
Not that I'm aware of. They could be lurking under a pseudonym.
I keep trying to get them to join but my suggestions may be falling on deaf ears. (leading horses to water and all that).
Bob
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob 
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#28 2011-09-01 00:14:04
- anonimnystefy
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- From: Harlan's World
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Re: Calculus problem.
horses to water?
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#29 2011-09-01 00:18:52
- ShivamS
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- Registered: 2011-02-07
- Posts: 3,648
Re: Calculus problem.
Another calculus problem...
Solve:
∫0^1∫3y^3e^x^2dxdy
I believe its:
(e9-1)/6
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#30 2011-09-01 00:18:58
- Bob
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Re: Calculus problem.
having trouble keeping up with the posts.
Horses to water:
There is an English proverb that goes like this:
"You can lead a horse to water, but you cannot make him drink."
Teachers in England use it a lot about their students. As in: I led him to the fountain of knowledge but he refuses to learn anything.
Thank you for your comment about me not having a superiority complex. I've made enough mistakes in my life to know better. At least I hope I have. 
Bob
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob
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#31 2011-09-01 00:22:08
- Bob
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Re: Calculus problem.
Can you state the outer and inner limits and insert some brackets to this please
∫0^1∫3y^3e^x^2dxdy
Bob
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob
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#32 2011-09-01 00:26:50
- ShivamS
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- Registered: 2011-02-07
- Posts: 3,648
Re: Calculus problem.
I knew that the limits would be confusing...
[0,1] and [3y,3]
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#33 2011-09-01 00:30:46
- anonimnystefy
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- From: Harlan's World
- Registered: 2011-05-23
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Re: Calculus problem.
so basically:
?Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#34 2011-09-01 00:31:51
- ShivamS
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Re: Calculus problem.
Yes.
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#35 2011-09-01 00:37:54
- Bob
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Re: Calculus problem.
Are you sure? That's not a simple integral.
Bob
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob
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#36 2011-09-01 00:41:01
- ShivamS
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Re: Calculus problem.
ex2 is not integrable by normal means of anti differentiation. However, in double integrals it is possible to reverse the order of integration to solve an otherwise impossible integral.
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#37 2011-09-01 01:04:27
- Bob
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Re: Calculus problem.
hi Shivamcoder3013
This has been a good example of what I have said about learning from the questions posed.
This is what I did:
So, once again, I agree with you. But it was a struggle for me.
We both deserve this:
Bob
ps. At the top of the help me list, is a thread on how to use LaTex. It would help if you tried to use it for these nasty maths problems.
Last edited by Bob (2011-09-01 01:06:18)
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob
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#38 2011-09-01 01:06:24
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Calculus problem.
hi bob
how'd you do that?
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#39 2011-09-01 01:09:33
- Bob
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Re: Calculus problem.
hi Stefy,
I googled for changing the order of integrals and found:
http://mathinsight.org/double_integral_ … n_examples
About half way down the page you will find example 2, which is very similar.
How are you doing with the webpage?
Bob
Last edited by Bob (2011-09-01 01:09:47)
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob
Offline
#40 2011-09-01 01:14:44
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Calculus problem.
haven't found it.any other clues?
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
Offline
#41 2011-09-01 01:27:39
- Bob
- Administrator
- Registered: 2010-06-20
- Posts: 10,583
Re: Calculus problem.
Well, I had hoped for more progress from you, but ok let's go through it step by step.
(i) I've made the picture and saved it as a GIF.
(ii) Then where have I put it?
(iii) You've seen the picture on your computer, so it (your computer) must 'know' where to look.
(iv) So how can you get your computer to tell you where that is?
Bob
ps. Go there by all means but please don't publish your findings back here. Thanks.
Last edited by Bob (2011-09-01 01:28:20)
Children are not defined by school ...........The Fonz
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you! …………….Bob
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#42 2011-09-01 01:41:34
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: Calculus problem.
found it.
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
Offline
#43 2011-09-01 02:16:05
- Shivamcoder
- Guest
Re: Calculus problem.
Bob, I found it too.