Mathematics - 11 September 2007

2007-09-11 04:25:45 · 4 answers · asked by Anonymous

2007-09-11 04:24:25 · 8 answers · asked by Anonymous

surds..

is there any rules when u subtract surds?

what would

√40 - √8 be?

pls explain in detail

what would √25 - √16 be?

pls explain in detail

what would 3√2 + 5√2 be?

pls explain in detail

and in questions like that, do you just add whatever is on the outside?(in this case 3 and 5)-why/why not

and what would

5√3 + 2√5 - 3√3 -7√5 be?

pls explain in detail.


best answer goes to first answer that explains in detail and is easy 4 me 2 understand. if the 1st person has answerd dont think that they will get best A for sure coz they probably didnt explain it well enough

so pls answer those questions and answer in detail.

thanks!!

best answer is waiting 4 you

2007-09-11 04:22:01 · 7 answers · asked by Anonymous

2007-09-11 04:21:13 · 14 answers · asked by srinatha11 1

For every n =1,2,3,... and x >=0, let f_n(x) = (1^x +2^x....+ n^x)/(n^(x+1)). Then, does f_n converge to some function f?
If x is an integer, then, by means of those expressions for the sum of integer powers of the natural numbers, it's easy to show lim f_n(x) = 1/(x+1). But does this remain true for every x >0?

If f_n converges to some f, then is the convergence uniform?
If we differentiate each f_n, then does f'_n converge fo f', supposing f_n --> f?

2007-09-11 04:14:45 · 3 answers · asked by Sonia 1

strictly decreasing.

2007-09-11 04:01:52 · 2 answers · asked by han 1

1. 5y-(2y-10)-25

2. 2/3(x-2)-1-1/4(x-3)

3. 9/10y-7/10-21/5

thanx a lot!

2007-09-11 03:34:49 · 4 answers · asked by dreamz 4

2007-09-11 03:24:30 · 4 answers · asked by Red Falcon 1

Let F(x)= f(f(x))
G(x)= F(x)^2
You also know that
f(4)=7
f(7)=2
f '(7)= 8
f '(4)=7

2007-09-11 03:11:41 · 2 answers · asked by Anonymous

Find a compound proposition involving the propositions p, q, and r that is true when p and q are true and r is false, but that is false otherwise

2007-09-11 03:11:05 · 3 answers · asked by Digital d 2

given that f(x) = 4 / square root of (x^2 + 9)

and the equation of the normal at the point of inflexion lying in the 1st quadrant is m*(square of n)*y - k*(square root of l)*x + 665 = 0
find the values of k, l , m , n

ps: i found f'' (x) to be : 4*(square root of (x^2 + 9)) * (2x^2-9) / (x^2 + 9 ) ^3

2007-09-11 03:09:54 · 3 answers · asked by DeSeRT EaGLe 1

Consider the functions f(x) and g(x), for which
f(0)=3
g(0)=8
f '(0)=9
g'(0)=-6

2007-09-11 03:09:08 · 3 answers · asked by Anonymous

If Ann's batting average is 0.320, how many hits would she expect to get in 25 times at bat?

2007-09-11 03:07:04 · 3 answers · asked by Alley 1

Some months ago I asked the question at http://answers.yahoo.com/question/index;_ylt=AoZQQ796ABG1xfCSMoOOT9pIzKIX;_ylv=3?qid=20070326151241AAxToH1
about bilateral condensation points of R. We should prove that, if S is an uncountable subset of R, then the set of it's bilateral condensation points, as well as the set of the bilateral condensation points of S that are in S, is uncountable. Then, I came up with a proof cited in the additional details to the original question. A bit messy, but I think it's right. I would like opinions of people who, like you, enjoy such problems.
Thank you

Definitions: If S is a subset of a topological space, we say x is a condensation point of S if every neighborhood of x contains uncountably many elements of S. We can prove that, if S has a countable topological base and S is uncountable, then the set of condensation points of S is uncountable. In the case of R, there are 2 kinds of condensation points:

2007-09-11 02:52:57 · 3 answers · asked by Steiner 7

2007-09-11 02:51:20 · 2 answers · asked by aims 1

2007-09-11 02:27:52 · 5 answers · asked by jeremy084 2

Please help me out on this!

2007-09-11 02:23:47 · 4 answers · asked by Digital d 2

show that p <--> q and ((p /\ q) \/ (~p /\ ~q)) are equal.

2007-09-11 02:09:02 · 3 answers · asked by Digital d 2

the displacement x m of a particle at time t seconds is given by x=(ke^(-3t))(2t^2+t), where k is a constant. if the initial velocity of the particle is 3m/s, determine the initial acceleration. find also the maximum displacement of the particle.

pls show the steps

2007-09-11 02:06:55 · 3 answers · asked by Anonymous

Question 1
F equals to e power xyzi bar plus two into xy cosyj bar plus bracket start xz plus twoy bracket k bar at the point one, one, one
Question 2 Let c be the curve x equals t, y equals t power two
Then integral subscript into bracket start two x plus y bracket close dx plus bracket start x power two minus y bracket close dy
Using line integral to solve this problem.

2007-09-11 02:02:27 · 1 answers · asked by Ibrahim S 1

2007-09-11 00:52:33 · 2 answers · asked by javv>>> 2

2007-09-11 00:24:31 · 4 answers · asked by iRizh a 1