Mathematics - 20 June 2007

2007-06-20 22:25:05 · 6 answers · asked by rumbie 1

2(a-b)

a=6
b=-3


Answer: ..and why?

appreciated

2007-06-20 21:44:53 · 11 answers · asked by Anonymous

According to my study guide this should require calculating six limits???

I am lost. I think 2 and -2 are asymptotes by finding zeros in the bottom but dont know how to calculate six limits to find asymptotes.

Thank You in Advance!

2007-06-20 20:25:02 · 4 answers · asked by Lanksta 1

2007-06-20 20:22:17 · 6 answers · asked by Anonymous

we have to write a formual

y=9^n+1 ( the n+1 is in the exponent) thanks :)

2007-06-20 20:16:21 · 3 answers · asked by fast.lane17 1

I have a piecewise function.

Need to find "B" so that F(x) is continuous

f(x)=
x^2 +b, x<2
x-b, x>or=2

2007-06-20 20:13:39 · 3 answers · asked by Lanksta 1

cant use calculator for test but have to find limit. Will I have to prove the limit on the test do you think or can i get it by making assumptions? I am lost and I have a bunch of functions I cant answer because none of them work with direct substitution like this one - lim X------>7 (x^2-49)/(x^2+5x-14) also the same problem with 15 in the denominator instead of 14.

Thanks ahead of time. for all of functions using direct substitution i either get something like 5/0 or 0/0.

2007-06-20 20:07:49 · 6 answers · asked by Lanksta 1

How do you find the first five terms of an airthmetic series with
t12=35 and S20=610 ( the 12 and 20 are superscriped)

Please explain thanks :)

2007-06-20 19:23:03 · 3 answers · asked by fast.lane17 1

This is my last problem and I don't know how to approach it. Any ideas?

Contracts for two athletes are randomly assigned to one or more of three firms A, B, and C. Let Y_1 denote the number of contracts assigned to team A and Y_2 denote the number of contracts assigned to team B.
a) Find the joint probability function for Y_1 and Y_2
b) Find F(1,0)

thanks!

2007-06-20 19:18:02 · 1 answers · asked by Anonymous

I have been working on this problem and am having trouble getting started. Can anyone help?

Let X and Y have the joint probability density function given by f(x,y) = 2 for 0 <= x <= 1, 0 <= y <= 1, and 0 <= x+y <= 1. Find
a.) P(X >= 1/2 | Y <= 1/4)
b.) P(X >= 1/2 | Y = 1/4)

thanks!

2007-06-20 19:16:02 · 1 answers · asked by Anonymous

/ 3
|          x/(2x - 1)^3 dx
/ 1

I need help with the suitable subsituition. I can do the otherwise method. I'm just interested in the suitable subsituition. Thanks in advance.

2007-06-20 19:10:45 · 1 answers · asked by Anonymous

I have a final and I am scared I will not get my credit if I fail:( Can you please explain each step as you go along?

6x^2+5x-6 * 12x^2-x-6 / 12x^2-17x+6
----------------------------------------------------------------
12x-3x^2 6x^2+13x+6 2x^2-8X

PLEASE HELP

2007-06-20 19:07:35 · 3 answers · asked by Anonymous

I have a mth final on friday and I am afraid I will fail if I don't understand this:( can you please help me)

x+5
---------------
-x^2-7x-10

2007-06-20 18:56:24 · 10 answers · asked by Anonymous

I know the graphs for functions such as: 1/x, 1/x^2, ln x, x^2, etc. However, what's the best approach to plot complex functions such as this: (1 + 3x), (2 - x^-2), (1 + 2x^3)? The reason is my instructor will ask us to find the area under the curve of such functions, but I only know the basic I mentioned above.

2007-06-20 18:34:36 · 3 answers · asked by Jorm 3

The course should cover in a systematic way, basic mathematics from the high-school level all the way to college level advanced subjects in the mathematics of integral and differential calculus, but only mathematics. Nothing else. Cost of such a program isn't an issue.

Any ideas?

2007-06-20 18:25:40 · 3 answers · asked by Bob D1 7

Check the following question and Pascal's answer:

http://answers.yahoo.com/question/index;_ylt=AljLVo8RBtg.K8Pg4OSLuXHsy6IX?qid=20070620002146AAOyNlu

Pascal has offered an intriquing question about the limit approaching the Euler Mascheroni constant. See wikipedia:

http://en.wikipedia.org/wiki/Euler-Mascheroni_constant

Prove that in the limiting case where x -> infinity, Zeta(1+1/x) - x = Euler Mascheroni constant. The Zeta function is the sum:

Zeta(k) = Σ (1/n^k) where n = 1 to infinity

2007-06-20 18:17:41 · 2 answers · asked by Scythian1950 7

1,5,14,30,55

then 1,5,17,53 and 161

2007-06-20 17:59:23 · 5 answers · asked by Anonymous

Let X and Y have the joint probability density function given by f(x,y) = k(1-y) for 0 ≤ x ≤ y ≤ 1. Find the following:

a. The value of k that makes this a probability density function.

For this I got k = 6

b. P(X ≤ ¾, Y ≥ ½)

I don't know how to go about doing this.

2007-06-20 17:58:42 · 1 answers · asked by Anonymous

A is the point (-6,1) and B is the point (10,3)
Find the coordinates of point C on AB such that AC = 3BC
Pls find the simplest way to do the question and write your working.
Thanks in advance

2007-06-20 17:53:10 · 2 answers · asked by paulscoles b 1

How do you devided this problem by using long division? I try but keep on screwing up, please help

2x^3 + 4x^2 - 5 / x^2 + 1

2007-06-20 17:30:57 · 5 answers · asked by Anonymous

2007-06-20 17:24:22 · 5 answers · asked by Bonjourno2biiillllion 1

Let X and Y be two independent uniform distributed random variables each on the interval (0,1). Find P( X < 2Y | X < 3Y).

Any hints would help greatly. Thanks.

2007-06-20 17:22:57 · 1 answers · asked by Anonymous

does anyone know the answer to this question??

The width of a rectangle is 7 m more than the length. Find the width if the area is 60 m2.

12 m
4 m
5 m

thanks so much!!

2007-06-20 17:09:14 · 6 answers · asked by Anonymous

2007-06-20 17:07:39 · 4 answers · asked by awcostello2003 1

2007-06-20 16:52:26 · 3 answers · asked by matcav2002 1

f(x) = (x) / (x-2)
g(x) = (5-x) / (5+x)

I am to plug f(x) and g(x) into f(x+1)g(x+1) to solve for a rational function.

I know how to multiply out the f(x) by the g(x), but I don't know how to change the original f(x) and g(x) into f(x+1) and g(x+1).

I hope I am making sense, thank you for your help.

2007-06-20 16:48:23 · 4 answers · asked by shih rips 6

2007-06-20 16:43:28 · 4 answers · asked by KaeleaMeaganVictoryianThomas 1

2007-06-20 16:19:12 · 4 answers · asked by roach_309 1

2007-06-20 16:18:20 · 2 answers · asked by matcav2002 1

2007-06-20 16:13:51 · 11 answers · asked by roach_309 1