Hey differentiating (x^-4.y) gives (x^-4.y')-(4*x^-5.y) (using the product rule), i have been struggling for ages to integrate the latter expression but can't show it equals x^4.y. Can anyone help? I've been trying integration by parts i'm presuming this is the right method and i'm just making a silly mistake.

2006-12-02 02:16:38 · 3 answers · asked by Philip J 2 in Mathematics

9 ⤊

Find the area of a rectangle if l = 15., w = 2 in.?

a) 17 in. 2
b) 30 in. 2
c) 13 in. 2
d) 68 in. 2

2006-12-02 02:15:09 · 5 answers · asked by cave_21man 1 in Mathematics

1 ⤊

How did the Earth come about?

Need some clarification. I am only interested in how plant life formed initially on Earth. How did this occur without seeds, etc.

2006-12-02 02:14:10 · 10 answers · asked by Shiva07 2 in Earth Sciences & Geology

0 ⤊

In Seebeck effect, thermo emf first rises to maximum value and then falls down to zero?

Why does the thermo emf in Seebeck effect reverse if the temperature of hot junction is increased more than temperature of inversion. What happens insdie the metals in the atomic level?

2006-12-02 02:13:11 · 2 answers · asked by mohan k 1 in Physics

3 ⤊

in pressure what does mmHG mean?

2006-12-02 02:12:07 · 5 answers · asked by pss4dm 1 in Chemistry

4 ⤊

Divide: 7/8 1/2?

a) 8/4
b) 7/16
c) 8/10
d) 1 3/4

2006-12-02 02:11:19 · 6 answers · asked by Tony R 1 in Mathematics

1 ⤊

Divide: 1/4 3/8?

a) 2/3
b) 3/12
c) 4/32
d) 2/4

2006-12-02 02:09:47 · 6 answers · asked by Tony R 1 in Mathematics

2 ⤊

What materials were early space shuttles made from?

To settle the dispute of the Apollo Moon Landing once and for all; verify the materials used to engineer the Apollo shuttle then determine whether or not those materials can withstand the Van Allen Radiation Belt.
http://video.google.com/videoplay?docid=3288261061829859642&q=Dark+Side+of+the+Moon

http://video.google.com/videoplay?docid=5774435062980328047&q=astronauts+gone+wild

http://video.google.com/videoplay?docid=1913474363747128107&q=What+Happened+on+the+Moon+Part

http://video.google.com/videoplay?docid=-5737681932896358451&q=What+Happened+on+the+Moon+Part+2

2006-12-02 02:08:07 · 3 answers · asked by The Writer 1 in Astronomy & Space

1 ⤊

If i am 381,862 hours old what month and year was i born ?

2006-12-02 02:07:00 · 20 answers · asked by freddy197120032003 3 in Mathematics

0 ⤊

physics word problem (newton's laws)?

the cable supporting a 2100 kg elevator has a max strength of 21750N. What maximum acceleration can it give the elevator without breaking?

the answer is.557 m/s^2, but how do you get that?

2006-12-02 02:06:32 · 7 answers · asked by yo yo ma 2 in Physics

1 ⤊

Describe the structure of alimentary canal of man?

u can details of alimentary canal in thebook of human anatomy.
it says about the section of the stomach.

these r the clues to u.

2006-12-02 02:05:07 · 6 answers · asked by Anonymous in Biology

0 ⤊

what does this regarding pressure?

35mmhg- what does mmhg stand for

2006-12-02 02:04:56 · 1 answers · asked by pss4dm 1 in Chemistry

0 ⤊

what is the lifespan of an oxen?

2006-12-02 01:57:50 · 4 answers · asked by bigandbouncy1 1 in Zoology

1 ⤊

What are the x intercept(s), y intercept, symetry, verticle asymtote(s), and horizontal or oblique asymtotes?

5x all over x^2-1

2006-12-02 01:56:29 · 3 answers · asked by johnhildeb 3 in Mathematics

1 ⤊

what is thrust load?

Helical gears create thurst load when they first mesh, and this problem apparently can be supported by using a bearing. But i don't know what thrust load actually is...

2006-12-02 01:50:55 · 4 answers · asked by dixie4x42000 2 in Engineering

4 ⤊

Do Plants convert sunlight in to mass during Photosynthesis ?

2006-12-02 01:50:36 · 5 answers · asked by cjc 1 in Biology

0 ⤊

The minimum ionisation energy of hydrogen is 13.6 eV. Why is it called the 'minimum' IE?

2006-12-02 01:46:26 · 2 answers · asked by lykastar 3 in Physics

5 ⤊

Does the Philosipher's stone really exist? And if so can it Really turn metal into gold?

I know that apparently God told Nicolas Flamel how to make the Philosopher's stone by showing him a book in his sleep (or something like that ^_^;;) and i want to know if this is true; that there is a stone that can actually change a certain compound of elements into a pure element like gold..?

2006-12-02 01:46:02 · 10 answers · asked by .:Tenten:. 1 in Earth Sciences & Geology

Questions asked on 2 December 2006:

Showing 721 to 750 of 794 questions

Questions asked on other days: