On Apr 26, 11:08 pm, easonrevant <easonrev...@[EMAIL PROTECTED]
> wrote:
> Ah, thank you for catching my arithmetic error. I was correct up to
> 15*(10-m)/8, but then I incorrectly
> plugged in the value 4*sqrt[15] for m, when I should have plugged in m
> = --4*sqrt[15].
> After making this correction, the answer is actually 15*(5 +
> 2*sqrt[15])/4, which is indeed a positive real number.
> So, the path lengths.
> The beach path length is x = m + 150 = 150 - 4*sqrt[15].
> The water path length is y = -4m = 16*sqrt[15]
>
> On Apr 26, 1:41 pm, RKL <mary...@[EMAIL PROTECTED]
> wrote:
>
> > In article
> > <06f3325f-3c97-4d13-8276-3abbb81b7...@[EMAIL PROTECTED]
>,
>
> > easonrevant <easonrev...@[EMAIL PROTECTED]
> wrote:
> > >http://mathhelpnow.blogspot.com
>
> > Interesting, if not circuitous method for solution. Unfortunately, the
> > problem asked for path lengths. And your minimum time solution is
> > negative.
>
> > --
> > He who waits to do a great deal of good at once, will never do
anything.
*...plugged in m = -4*sqrt[15]
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