Mathematics - 24 November 2007

can I then say that the function is not differentiable at that point?

2007-11-24 15:20:24 · 2 answers · asked by q_midori 4

Let a and b be nonidentity elements of different orders in a group G of order 155. Prove that the only subgroup of G htat contains a and b is G itself.

Well since the only divisors of 155 are 31 and 5, then the orders of a and b have to be 31 and 5. (Or 155 and 1 I suppose.) My proof looks like this, but it needs patching up:

Let H be a subgroup of G, and a, b elements of H. To show H = G:
H is a subset of G because it is a subgroup of G.
To show G is a subset of H:
|a| divides |H| and |b| divides |H|
31 divides |H| and 5 divides |H|
|H| = y*155 because the least common multiple of 31 and 5 is 155.
Therefore |G| divides |H|.
Therefore G is a subset of H.

Can someone help make this look nicer? I have a feeling there are a lot of holes in this proof. Thanks!!!

2007-11-24 15:02:56 · 1 answers · asked by Anonymous

if a sophomore is taking algebra II and the school doesn't require a pre-calc. class as a prerequisite, should they go ahead and sign up for AP calc. AB for junior year so that they'd be able to take calc. BC their senior year if they did well??

2007-11-24 15:00:36 · 2 answers · asked by Matt 1

For each of the following forms determine whether the following limit type is indeterminate, always has a fixed finite value, or never has a fixed finite value. In the first case answer IND, in the second case enter the numerical value, and in the third case answer DNE. Note that l'Hospital's rule (in some form) may ONLY be applied to indeterminate forms.
1)inf^inf DNE
2) inf^-e DNE
3) 0^inf 0
4) 1/-inf 0
5)pie^-inf DNE
6)pie^inf DNE
7) inf^-inf 0
8)inf^0 IND
9)0.inf IND
10) inf-inf IND
11) 1^0 1
12) inf^1 DNE
13) 1^inf IND
14) inf.inf DNE
15) 0^-inf DNE
16) 0^0 IND
17) 1^-inf IND
18) inf/0 DNE
19) 1.inf DNE
20) 0/inf DNE


Can you tell me whats wrong with this solution as still I am getting 3-1 wrong answers with this solution

2007-11-24 14:30:50 · 3 answers · asked by Anonymous

perform the indicated operation?

2007-11-24 14:10:49 · 4 answers · asked by Anonymous

1.) (x^2)/(x-3) - (9)/ (x-3)


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

2007-11-24 14:07:52 · 4 answers · asked by Anonymous

I can't seem to figure out how to solve this problem. I don't want the answer, but if someone could give me a link to a similar problem showing how to solve it that'd be great.

"Three water supply valves, A, B, and C, are connected to a tank. If all three valves are opened, the tank is filed in 8 hours. The tank can also be filled by opening A for 8 hours and B for 12 hours, while keeping C closed, or by opening B for 10 hours and C for 28 hours, while keeping A closed. Find the time needed by each valve to fill the tank by itself. (Hint: Let x, y, and z, respectively, be the fractions of the tank that valves A, B, and C can fill alone in 1 hour.)"

2007-11-24 14:07:40 · 2 answers · asked by Carl 2

2007-11-24 14:07:39 · 2 answers · asked by Jason N 1

i need help with this problem.

y is the function of x (y=)

6x - 3(y - 1) = 4x + 8

2007-11-24 14:06:53 · 5 answers · asked by IDchecker27 2

I have to do corrections for homework and I have no idea what this problem means.

The measure of an angle is five times the measure of its complement. What is the measure of the angle?

I know the answer is 75 supposely

2007-11-24 14:03:59 · 2 answers · asked by XD 1

Q: Find the integral by interpreting it in terms of its areas.

The integral from -4 to 4 of (16-(x^2))^(1/2), or the square root of (16-(x^2)).

Thanks!

2007-11-24 14:01:09 · 4 answers · asked by J 2

2007-11-24 13:58:16 · 2 answers · asked by ezekial55555 2

Algebra with Pizzazz! What is the answer to " What Did the Spanish Farmer Say to His Chicken"? Please help me. I have no clue how to do this worksheet. Please tell me the answer. Thanks. Bye.

2007-11-24 13:43:20 · 4 answers · asked by Alyssa H 1

Please show your work. Thanks for your help! :)

2007-11-24 13:38:27 · 3 answers · asked by Anonymous

So far I have got
t^2 +7t=18
t^2 +7t+7=18+7
(t+_)^2 =25
t+_ +or- square root of 25 ----->t+_ = +or- 5
t=_ +or- 5

t=2 or t=9

This is how far I have gotten so far and I think all of it at the moment is right. I got the t=2 and 9 from a graphing solution but I don't know what numbers go in the _ spots. Any help?

2007-11-24 13:21:01 · 4 answers · asked by Josh_Schltz 2

A solution has a pH of 11.60. The value of [H+] is
a. 2.5  10-4 b. 4.0  10-3 c. 4.0  10-11 d. 2.5  10-12

2007-11-24 13:12:51 · 4 answers · asked by Anonymous

I am trying to prove that two components of motion equal another equation, but I am having trouble solving for the variable of one of them, the equation is

y = -16t^2 + Vsinxt

Where V is equal to a constant, it is supposed to be V-not, but I don't know how to type that. I am supposed to solve for t in the equation. Any help would be appreciated.

2007-11-24 13:09:56 · 2 answers · asked by YabbaDabbaDoo 2

2007-11-24 12:47:06 · 5 answers · asked by Anonymous

Proof: Suppose that a=b. Then
a = b
a^2 = ab
a^2 - b^2 = ab - b^2
(a + b)(a - b) = b(a - b)
a + b = b
a = 0
What do you think?

2007-11-24 12:46:58 · 9 answers · asked by Rick 7

factor completely

2007-11-24 12:26:46 · 3 answers · asked by Anonymous

2007-11-24 12:24:57 · 2 answers · asked by Anonymous

How would I solve these?

1. x^2 - 3x + 5 = 0

2. x^2 - 3x = -5

3. 2x^2 - 8x = -16

2007-11-24 12:22:12 · 3 answers · asked by net_phantom16 2

Thank you show work

2007-11-24 12:19:56 · 5 answers · asked by Shepard S 1

perform the indicated operation

2007-11-24 12:18:19 · 11 answers · asked by Anonymous

transform the following polar equation in rectangular coordinates: r csc theta = 8

please help & explain step by step so I can follow, thanks

2007-11-24 12:16:25 · 1 answers · asked by Anonymous

Please help...I am supposed to perform the indicated operation.

2007-11-24 12:14:53 · 7 answers · asked by Anonymous

In these two geometric sequences, tell me the pattern, and also the next three terms for each.

1. 10,000 , -200, 4, -0.08,.......

2. 3/4, 1/2, 1/3, 2/9,........

2007-11-24 12:08:47 · 3 answers · asked by Anonymous

How do I find the rule for these sequences? I just need to get some help, how do I figure these out? I've been thinking about it all day.... I just need some help.


Sequence #1:

N: 1, 2, 3, 4, 5

f(n): 7, 9, 7, 9, _?_

Rule: _?_

Sequence #2:

N: 1, 2, 3, 4, 5

f(n): -3, 6, -9, 12

Rule: _?_

Sequence #3:

N: 1, 2, 3, 4, 5

f(n): 1, 3, 6, 10, 15

Rule: _?_

2007-11-24 12:02:42 · 5 answers · asked by ulu2011 2

how to solvveee:
91-cosx) (1+Secx)=sinx tanx

2007-11-24 11:57:45 · 4 answers · asked by ? 1

2007-11-24 11:49:23 · 5 answers · asked by Cliffmom 1