Science & Mathematics - 23 October 2007

Are there different methods to integrate indefinite integrals?

Sometimes it takes too long to think about the question and sometimes I just don't know how to do it.

So instead of integration by substitution, parts, trigonometric substitution, or partial fractions, what else can I use?

2007-10-23 15:52:22 · 3 answers · asked by UnknownD 6 in Mathematics

Compute φ(1000000).

I found that the prime factorization of 1000000 is 5^6 * 2^6. Then I did
1000000(1-.5)(1-.2) and came up with

400000 for an answer.

2007-10-23 15:52:06 · 2 answers · asked by 3545 2 in Mathematics

How is humidity defined and how does temperature affect the ability of air to hold water vapor? How does this relate to the way clouds form?

2007-10-23 15:52:03 · 5 answers · asked by Anonymous in Weather

2007-10-23 15:48:18 · 4 answers · asked by Shakera L 1 in Biology

If you have a website to support your answer, please provide.

2007-10-23 15:46:39 · 4 answers · asked by mocaqueen30 2 in Botany

can u help me
my teacher does one example and thats it...
y=sec^2*x - tan^2*x


bonus
find a formula for the nth derivative.
y=1/(Square root of x)

2007-10-23 15:42:35 · 2 answers · asked by srokanator 3 in Mathematics

I like to learn new constellations and look for shooting stars, but am having a really hard time finding a location that is dark, has a good view of the sky, and where I will not be disturbed. I live in Tampa, Florida. Any other amateur stargazers out there?

2007-10-23 15:40:42 · 4 answers · asked by Larkspur 5 in Astronomy & Space

2007-10-23 15:39:46 · 2 answers · asked by akshay 2 in Botany

Identity sucks, i need help step by step would help thanks

2007-10-23 15:39:46 · 3 answers · asked by Anonymous in Mathematics

2007-10-23 15:39:41 · 12 answers · asked by Anonymous in Chemistry

use the second derivative test to find the relative extrema.
h(t)= t-4sqrt t+1

2007-10-23 15:37:48 · 3 answers · asked by laweezer08 1 in Mathematics

2007-10-23 15:37:32 · 6 answers · asked by Anonymous in Astronomy & Space

They are due tomorrow and i need them tonight! Help pleaseeeeeeeeeeee!

2007-10-23 15:36:12 · 2 answers · asked by Anonymous in Biology

Consider 50 mL of a solution that is 0.25 M in both H2PO41- and HPO42-.

What is the pH of the solution?

2007-10-23 15:35:37 · 1 answers · asked by Anonymous in Chemistry

A nurse comes on duty and checks a patient's chart where the doctor's order read, "Administer 5L dextrose solution over a period of 24 hours." How much solution will be left after 9 hours?

2007-10-23 15:35:27 · 14 answers · asked by Sydney.♥ 2 in Mathematics

i`m doing cross word puzzle. and i cant find it..

2007-10-23 15:32:50 · 1 answers · asked by Anonymous in Astronomy & Space

i'm so confused for my hw...it might look easy, but science is so hard for me. okay. heres what it says on my worksheet.

*imagine an individual cell in your body carrying on respiration.
1. what does the cell need? How does these materials reach the cell?
2. What does the cell give off? How do these materials leave, first from the cell and then from the body?
3. How do substances get into and out of the cell?
4. Why does he cell carry on respiration? Why is this process so important?
5. Many parts of the body are either directly or indirectly involved with respiration. How do each of the following parts of the body contribute to respiration at the level of individual cells: teeth, heart, skin, kidneys, lungs, salivary glands, thyroid glands, brain, capillaries, pancreas, and stomach

HELP!

2007-10-23 15:31:53 · 2 answers · asked by Kelsey 1 in Biology

2007-10-23 15:31:02 · 7 answers · asked by hi 2 in Medicine

f(x)= cos (e^x) +e ^x sin (e^x)
-e^x sin (e^x) + e^x sin (e^x) + e^2x cos (e^x)
The part I don’t get is why is e^x sin(e^x) there
Isnt it just : -e^x sin (e^x) + e^2x cos (e^x)

2007-10-23 15:30:43 · 2 answers · asked by pnetecos 1 in Mathematics

2007-10-23 15:29:57 · 7 answers · asked by kei-kei 2 in Engineering

2007-10-23 15:29:48 · 4 answers · asked by Anonymous in Mathematics

my boyfriend says 8 but i say 2...who's right?

2007-10-23 15:28:25 · 5 answers · asked by ERICA_ZION77 2 in Zoology

How would I prove this is 4 or more steps.

csc^2 Θ – cot^2 Θ = cot^2 Θ (1-cos^2 Θ)
sec^2 Θ


(csc -cot is all being divided by sec) (and you cant mess with the right side)

2007-10-23 15:27:39 · 2 answers · asked by Anonymous in Mathematics

Why do grocery stores spray there fresh produce with water??

If a shipwrecked crew drank salt water, they could die? Explain why??

If a bowl of fresh strawberries is sprinkled with sugar, a few minutes later they will be covered with juice. Explain why this happens.

2007-10-23 15:25:13 · 2 answers · asked by B. 2 in Biology

Does anyone know of anywhere I can find contributions Hildegard von Bingen made to astrology? Everywhere I look for her it never shows her cosmological views, just what music she wrote and whatnot.

2007-10-23 15:24:39 · 1 answers · asked by xoxtwilight 2 in Astronomy & Space

2007-10-23 15:22:58 · 12 answers · asked by Anonymous in Astronomy & Space

2007-10-23 15:22:08 · 3 answers · asked by Brooklyn ^_^ 1 in Earth Sciences & Geology

I need to know where mitosis in plants occur and how it works, does it occur in the root/stem or root tip or stem/root tip or somewhere else in the plant and how does it work?

2007-10-23 15:20:21 · 5 answers · asked by j8ojh1 2 in Biology

ok, so here is the Question im stuck on.... "the graph of the function f(x)= 2x^3 - 3x^2 +x +1 is translated to its image, g(x), by the vector [1, -1]. Write g(x) in the form g(x)= ax^3 + bx^2 + cx +d "

ok, so basically you need to translate f(x)= 2x^3 - 3x^2 +x +1 to the right one unit and down one unit.... i dont know how to do this for a polynomial of third degree... can anyone please show me how... thanx alot...

2007-10-23 15:19:02 · 2 answers · asked by john doe 2 in Mathematics

2007-10-23 15:17:18 · 3 answers · asked by reba 1 in Medicine