Comments on: Once In 50 Years

By: Samantha69

Samantha69 — Mon, 11 Oct 2010 13:46:33 +0000

The first part is dy/dt=0 ( stationary point) .
To determine nature of point, find d2y/dx2. If it is > 0 it is minimum point. Which means y is a minimum value. If it is < 0 then it is maximum point.
The second part is Y is a decreasing function, therefore :
dy/dt<0. From there set of t can be equated.

By: Abigail

Abigail — Sun, 22 Aug 2010 09:55:09 +0000

For part two just differentiation

y is decreasing function of t
i.e. t = f(y)
=> dt/dy < 0

.-= From Abigail's blog: Foreword =-.

By: kris

kris — Wed, 11 Aug 2010 16:08:09 +0000

yaya..Miss Loi.i think so for the 2nd question..lol..

By: Miss Loi

Miss Loi — Wed, 11 Aug 2010 06:34:57 +0000

Ok ... umm ... something ... like ... that ...

But Part 2 needs meh?

By: Ivan

Ivan — Tue, 10 Aug 2010 22:01:10 +0000

RT @MissLoi Once in 50 years: http://bit.ly/aS4uLI *spinning totem*

By: Miss Loi

Miss Loi — Tue, 10 Aug 2010 21:55:37 +0000

If THIS CURRENT rain had fallen ~48 hours earlier, my blog post would have been more realistic: http://bit.ly/aS4uLI

By: Kris

Kris — Mon, 09 Aug 2010 15:04:09 +0000

Hehe..i barely remember how to do differentiation anymore. But i believe, 1st questions require differentiation and there is 2 value of t to solve.

2nd question , should do double differentiation. Replace, it with the value of t from 1st question. Determine which t, will produce the negative and that t should be the answer to the receding flood waters.

By: Life of Lopsided 8

Life of Lopsided 8 — Mon, 09 Aug 2010 06:26:36 +0000

Blog post by @missloi - Once In 50 Years http://bit.ly/duHy9s

By: Miss Loi

Miss Loi — Mon, 09 Aug 2010 05:48:11 +0000

Once in 50 years: http://bit.ly/aS4uLI *spinning totem*