Mathematics - 3 September 2006

Find the average rate of change of the function y=f(x)=x^2 between x=2 and x=5:find its instantaneous rate of change at x=2.

2006-09-03 04:19:39 · 11 answers · asked by laily 1

What's the geometrical meaning of the central extension of the algebra
of diffeomorphisms of the circle?

2006-09-03 04:07:28 · 2 answers · asked by PI Whore 1

Rahman left town A and drove to town C. After travelling 1/3 of the journey at an average speed of 72km/h for 45 minutes,he stopped at townB to have his lunch. He took 1/2 hour for lunch. Then he carried on with journey at an average speed of 90km/h. He reached Town C at 1.15pm. Qns-(a) What was the distance between TownB and TownC?(b) What was the time when Rahman left TownA?

2006-09-03 03:57:34 · 13 answers · asked by lousydotcom r 1

5+5+5=550

2006-09-03 03:47:36 · 13 answers · asked by Anonymous

2006-09-03 03:46:05 · 14 answers · asked by heavenly_angel33@verizon.net 1

Prove that for positive numbers a and b, (a+b)(1/a+1/b)>= 4

Prove that (xyz)^1/3.(1/x+1/y+1/z)>= 3 where x,y,z belongs to real positive numbers

I m really getting frustrated cuz i m nt able to solve these 2 problems.. it is from Sequence and Series chapter.. I m trying to be calm ...I just need solution of these 2 question..Thanks.. any one good in mathematics plz leave ur id plz plz plzz..
Thanks in advance

2006-09-03 03:32:52 · 4 answers · asked by Whamper 3

2006-09-03 03:27:26 · 5 answers · asked by Anonymous

This is actually a correct version to my previous question:
if x is more than 0 and less than 180
then sin x = y, means x has two values
while tan x = y and cos x = y
x only has one value?
is it correct?

2006-09-03 03:02:43 · 6 answers · asked by unquenchablethirst 2

So if x is more than 0 and less than 180...
the results of sin x will be two
while there will only be one result of cos and tan x
is it true?
thanks! and anyone has suggestion for further reading?

2006-09-03 02:49:22 · 6 answers · asked by unquenchablethirst 2

P is the point (7,5) & a1 is the line with the equation 3x+4y=16

1) Find the equation of the line a2 which passes through P & is perpendicular to a1.
2) Find the point of intersection of the lines a1 & a2.
3) Find the perpendicular distance of P from the line a1.

i'm really stuck on these,can anyone explain how to get the answers to this pls with the theories & equations stated clearly?thanks...

2006-09-03 02:07:35 · 6 answers · asked by hu_ru_anyway 1

it is a mystery

2006-09-03 01:47:25 · 35 answers · asked by bolla 3

some time ago i had a desire to find the above, but all i could find were pathetic dvds with clips that jumped from one thing to another.
what i actually want is one long section just of zooming deeper and deeper into the infinate detail of the mandelbrot set, of at least 20 minutes but ideally much longer.
either dvd for sale or internet clip would be fine.

2006-09-03 01:37:01 · 6 answers · asked by catweazle 5

QUESTION: Mr Bowman sold a carriage for $240, and thereby cleared 1/8 of this amount; what per cent would he have gained if he had sold it for $280?

TEXTBOOK ANSWER: Mr Bowman cleared 1/8 of $240, or $30, and the carriage cost $240 - $30, or $210. If he had sold the carriage at $280, he would have gained $70 on £210 which are ¼ of the cost, or 25%.

Now I think this is wrong. I think the correct answer is 1/3 or $33 1/3 %. Although $70 is 25% of $280, that was not the original price. The original price was $210 so the gain was $70 on $210 which would be 1/3 or 33 1/3 %.

So have I caught the book out here? Who is right, me or the book?

Many thanks.

2006-09-03 00:34:52 · 5 answers · asked by paulmurphy42 1

2006-09-03 00:24:12 · 10 answers · asked by double B 2

2006-09-03 00:21:15 · 4 answers · asked by jhen_hidaka 1