Discover MakerZone

MATLAB and Simulink resources for Arduino, LEGO, and Raspberry Pi

Learn more

Discover what MATLAB® can do for your career.

Opportunities for recent engineering grads.

Apply Today

Thread Subject:
is the trip always feasible?

Subject: is the trip always feasible?

From: Christopher

Date: 10 Nov, 2010 22:05:04

Message: 1 of 5

Is it always true that a journey from A to B and back to A is possible? (E.g., no situations in which the winds blow harder away from A than you can possibly go under max throttle)

Subject: is the trip always feasible?

From: ImageAnalyst

Date: 10 Nov, 2010 22:26:23

Message: 2 of 5

On Nov 10, 5:05 pm, "Christopher" <paint007.nos...@cs.duke.edu> wrote:
> Is it always true that a journey from A to B and back to A is possible?  (E.g., no situations in which the winds blow harder away from A than you can possibly go under max throttle)
------------------------------------------------------------------------------------------------------------------
No, not always. For example an electron cannot go through a diode and
then reverse direction and go back through in the same, but opposite
direction. By the way, is this a MATLAB question? Anyway, one could
come up with lots of funny counter examples (A=earth, B=center of the
sun, etc.), but what the heck are you talking about (more
specifically)?

Subject: is the trip always feasible?

From: Klaas

Date: 10 Nov, 2010 22:35:03

Message: 3 of 5

Classic! It wasn't actually a general philosophical question, but a misplaced post regarding the current matlab contest. :-)

ImageAnalyst <imageanalyst@mailinator.com> wrote in message <0c28efc9-7c3f-4ecc-97b3-ff022b29a6fa@z9g2000yqz.googlegroups.com>...
> On Nov 10, 5:05 pm, "Christopher" <paint007.nos...@cs.duke.edu> wrote:
> > Is it always true that a journey from A to B and back to A is possible?  (E.g., no situations in which the winds blow harder away from A than you can possibly go under max throttle)
> ------------------------------------------------------------------------------------------------------------------
> No, not always. For example an electron cannot go through a diode and
> then reverse direction and go back through in the same, but opposite
> direction. By the way, is this a MATLAB question? Anyway, one could
> come up with lots of funny counter examples (A=earth, B=center of the
> sun, etc.), but what the heck are you talking about (more
> specifically)?

Subject: is the trip always feasible?

From: Sean

Date: 10 Nov, 2010 23:03:04

Message: 4 of 5

"Christopher" <paint007.nospam@cs.duke.edu> wrote in message <ibf4ug$rrf$1@fred.mathworks.com>...
> Is it always true that a journey from A to B and back to A is possible? (E.g., no situations in which the winds blow harder away from A than you can possibly go under max throttle)


I would guess that is a test case, as well as dying entering out into a "perfect storm" from point A.

Subject: is the trip always feasible?

From: Seth Popinchalk

Date: 11 Nov, 2010 16:46:04

Message: 5 of 5

"Sean " <sean.dewolski@nospamplease.umit.maine.edu> wrote in message <ibf8b8$91r$1@fred.mathworks.com>...
> "Christopher" <paint007.nospam@cs.duke.edu> wrote in message <ibf4ug$rrf$1@fred.mathworks.com>...
> > Is it always true that a journey from A to B and back to A is possible? (E.g., no situations in which the winds blow harder away from A than you can possibly go under max throttle)
>
>
> I would guess that is a test case, as well as dying entering out into a "perfect storm" from point A.

The test suite provided on the file exchange should be representative of the actual contest test suite. In general, it may be that a closest approach solution is the only way to minimize the score.

Seth

Tags for this Thread

What are tags?

A tag is like a keyword or category label associated with each thread. Tags make it easier for you to find threads of interest.

Anyone can tag a thread. Tags are public and visible to everyone.

Contact us