Mathematics - 3 September 2007

Let x_n be a sequence of real numbers such that lim (x_n - x_(n-1)) = k. Show that lim (x_n)/n = k.

If lim (x_n)/n = k, then is it true that lim (x_n - x_(n-1)) = k?

Thank you for any help

2007-09-03 09:34:22 · 2 answers · asked by Tania 1

(1). y=(tan^-1)(sqrt(5x^2-1))

dy/dx=??

(2). f(x)=8xarcsin(x)
f '(x)=????

2007-09-03 09:31:19 · 3 answers · asked by Anonymous

Thanks for answering

2007-09-03 09:30:01 · 3 answers · asked by edbiology 1

Okay, so the variables totally threw me off, can someone guide me through this step by step?

2007-09-03 09:27:36 · 8 answers · asked by Answwr 2

its this pyramind that helps you solve problems like this it goes something like this:
1
11
121
.....

that is all i know i need to know whole pyramind up to the 12th row please help me

2007-09-03 09:25:22 · 4 answers · asked by kris 2

2007-09-03 09:20:48 · 5 answers · asked by awesome 2

(2 x 10^4)times(2 x 10^-6)

(4 x 10^2)/(2 x 10^-3)

(6 x 10^12)+(5 x 10^11)

(4 x 10^15)-(2 x 10^13)

can you please show your work

2007-09-03 09:20:40 · 2 answers · asked by stat 2

I know the answer, but it's the steps that's been confusing me and I don't even know if my answer is right. When I do problems like these I usually come up with one line, skipping all the steps. Can someone guide me through this step by step?

2007-09-03 09:15:32 · 4 answers · asked by Answwr 2

Let alpha: A->B and omega: B->C be functions s.t. (omega)(alpha) is onto. Prove that omega is onto.

2007-09-03 09:12:08 · 1 answers · asked by mandy 1

This one is from http://www.mindchallenger.com
The answers to most are here. Originally, this was asked to me by a friend and I actually worked this one out. It took a few minutes. How long will it take you? (some of the details are changed to make it harder for some to just look up the answer on the internet).

You have 1000 coins on HEADS. The first person changes that state of every coin: if it is HEADS he flips it to TAILS, and if it is TAILS he flips it to HEADS. The second person changes the state of every 2nd coin. The third person changes the state of every third coin. This repeats up until the 1000th person. How many coins are flipped from their initial position of HEADS?

2007-09-03 09:10:56 · 2 answers · asked by J S 2

plzz i have chemistry class and thats my homework but i dont find it.. i look for it in google.. but i dont find it either...
if somebodys knows plz tell me..
a lot of thankz..

2007-09-03 09:09:08 · 2 answers · asked by K!R@ 2

24=2^3X3
36=2^2X3^2
48=2^4X3
SORRY I ASKED AGAIN I DONT GET THIS ONE SORRY

2007-09-03 09:08:21 · 2 answers · asked by todi 1

What is the laplace transform of cos(2t-(pi/6))

I tried it, and got
[s/((s^2)+4)] e^(-s(pi/12))

does that look about right?
For the record, I used the time shifting property.

2007-09-03 09:04:14 · 2 answers · asked by Daniel 4

i can't think of 15 numberss. can you help me? pleaseeeee.

2007-09-03 09:03:27 · 12 answers · asked by imaaweird0h 1

He's not sure how to work this problem.

-h/3 -4=13

Thanks in advance :)

2007-09-03 09:01:17 · 15 answers · asked by miley 2

...Or meters in a second. It's 1 it is? I'm getting confused.

Please answer! =] And thanks!

2007-09-03 08:59:37 · 7 answers · asked by Anonymous

I have to find the GCF of
24, 48, and 60

The answer in the back of my book says 12. I don't understand how they got that answer. In fact, I can't figure out how to do GCFs of anything with three terms for that matter. Could someone explain what I'm supposed to do on this sort of problem?

2007-09-03 08:52:44 · 6 answers · asked by jotaro 1

2007-09-03 08:50:46 · 3 answers · asked by Anonymous

What is the number of distinct 4-person committees that can be chosen from a group of 6 people?

I know I asked this question earlier, but can someone explain the steps to me?

2007-09-03 08:42:57 · 7 answers · asked by la la la 2

2007-09-03 08:36:09 · 5 answers · asked by dr_jr_solorio 1

I can't comprehend them.
i understand i need to find the common denominator and my teacher told us we're only going to use 2,4,6,8,16. no longer than that but i still don't understand since some are mixed and others aren't.

Here's an example of a few I'm working out.. rephrase.. stressing on..

http://i19.tinypic.com/625yt1j.jpg

2007-09-03 08:32:00 · 5 answers · asked by Jessie 1

a) find the inverse f^-1(x) and state its domain and range.
How can I do it???

2007-09-03 08:30:45 · 3 answers · asked by Anonymous

http://answers.yahoo.com/question/index?qid=20070903112434AAAKao8&r=w
this is my another problem
somebody tell me how to do it
but i don know how to fix:(t^3+3t^2-12t+4)/(t-2)

2007-09-03 08:30:15 · 1 answers · asked by Anonymous

f(x)=cos(2x)-1/cosx-1
i know the answer is -1 can anyone get the work?

2007-09-03 08:29:36 · 2 answers · asked by jducksgolf 2

What is the number of distinct 4-person committees that can be chosen from a group of 6 people?

2007-09-03 08:24:52 · 3 answers · asked by la la la 2

What is the lowest number that has and interger answer for its square root, cubed root, and fouth root?

2007-09-03 08:20:50 · 10 answers · asked by THE ICE AGE 2

This is a homework problem that I just cant figure out! It's the beginning of the semester and no book yet!

One Quart of ice cream is to be made into the form of a cube. What should be the length of a side in centimeters (and it gives the conversion 1Gallon = 3.786 Liters)

Please tell me how to solve

2007-09-03 08:05:54 · 2 answers · asked by College student 1

Given 0 <= a <= b,

how do you prove that

sqrt(ab) <= (a+b)/2?

2007-09-03 08:04:55 · 2 answers · asked by Anonymous

2007-09-03 07:56:59 · 7 answers · asked by coolio_gal 1

find the replacement set if x = (0,1,2,3,4,5,6,7)

2007-09-03 07:56:01 · 6 answers · asked by Anonymous