Mathematics - 9 August 2007

2007-08-09 08:01:08 · 5 answers · asked by Anonymous

2007-08-09 07:44:06 · 3 answers · asked by Anonymous

The statement was "The function f(x)=e^(x^2) has no antiderivative, True or False?

Please somebody help me with the answer. I said False, but my teacher said true.

2007-08-09 07:38:41 · 7 answers · asked by Ira R 3

http://upload.wikimedia.org/wikipedia/en/0/05/Littleprince.JPG

His height is 4 feet and radius of the planet is 6 feet.

2007-08-09 07:30:34 · 2 answers · asked by Alexander 6

2(x+3)^2 / x^2(x-1) divide by 10(x^2 - 9) / 2x^2 + x + 3

I have simplified, flipped the fraction on the right over and multiplied them but still can't get the right answer. I get
(x+3)(2x+3) / 5x^2 (x-3) evertime but the answer says
(x+3)(2x+3) / 5x^3 (x-3) (the 5x being cubed not squared).

If anyone call help by telling me if I have proved the answer wrong or have gone wrong myseld then thanks, it would also be helpful to know where I have gone wrong. I've gone over this loads and it's really annoying!

2007-08-09 07:21:56 · 7 answers · asked by will t 2

Take a look at Example #5 on this website please:

http://tutorial.math.lamar.edu/Classes/CalcI/TrigEquations_CalcI.aspx

(It's about 3/4 of the way down on the page.) I follow everything that he's doing up until the point where he actually plugs in his answers and gets the solutions. I think that HE did something wrong because there's no way possible (or at least not that I can figure out) that you can come up with those answers by plugging in the provided values. Can someone please help with this? Either confirm that he's wrong, or please explain what I'M doing wrong that I keep getting different answers. For example, for the #5, I got things like:

For n = -1
-.2535
-2.0043

For n = -2
-3.3951
-4.9659

For n = -3
-6.5367
-8.1075



WHAT IS UP WITH THIS?! THANK YOU!

2007-08-09 07:12:20 · 3 answers · asked by Anonymous

Solve.
Jeans are on sale at the local department store for 30% off. If the jeans originally cost $57, find the sale price. (Round to the nearest cent.)

$55.29
$17.10
$39.90
$74.10


Problem 2

Substitute the given values into the formula and solve for the unknown variable.
d = rt; t = 8, d = 16

2
0.5
24
8

2007-08-09 07:09:36 · 4 answers · asked by Anonymous

How do you calculate how long a computer would take to crack a password using brute force? For example, if the password was

Aiediew9r389032iopouuiKJJIe3

How long would it take a computer to find this code by calculating every possible combination? Thanks!

2007-08-09 07:04:23 · 6 answers · asked by what? 5

2007-08-09 07:00:29 · 5 answers · asked by .♥Blessed.and.Highly.favored♥. 2

2007-08-09 06:55:05 · 3 answers · asked by R. T 1

2007-08-09 06:51:06 · 4 answers · asked by luckygirlkim 1

2007-08-09 06:46:17 · 6 answers · asked by Anonymous

ac
cd
bd
ad

2007-08-09 06:42:37 · 4 answers · asked by Love Me♥ 2

My graphic calculator can only plot one line at a time now- when entering data in Y= and then going to graph. It used to be able to graph many at the same time instead of just one at a time. I have a TI-84 Plus. Does anyone know what option in the calculator I need to change?

2007-08-09 06:25:12 · 4 answers · asked by .......... 2

2007-08-09 06:09:58 · 5 answers · asked by applebeans 2

2007-08-09 06:04:34 · 7 answers · asked by Jay Blu 2

Summer Homework and I don't have a clue about Elimination Method.

-4x+y=-12
4x+2y=6

5x+2y=12
-6x-2y=-14

5x+4y=12
7x-6y=40

5m+2n=-8
4m+3n=2

All of these don't NEED to be solved. I just need an example to go by for the other three problems. If you actually do all four, you'll definitely get the 10 points.

2007-08-09 05:27:29 · 7 answers · asked by Anonymous

okay so i have asked a question similar to this.. but im going to make it a little harder this time..
what you do is you have to use the numbers 0-9, one time each and make them equal 100.
but you can only use either all addition,subtraction, multiplication, or all division. exp (?+?+?+?=100)
or you can use them all one time each. exp. (?+?*?-?/?=100)

good luck! =]

2007-08-09 05:18:53 · 7 answers · asked by miss lyss 2

The two complex number Z1 = a/(1+i) and Z2 = 3/(1-2i) where a, b are real numbers. are such that Z1 + Z2 = 3. Calculate the value of a and b.

Okay, so i went about solving this question as an ordinary complex question.

a(1-i)/(1+i)(1-i) + b(1+2i)/(1-2i)(1+2i) = 3(1-i)(1+2i)

eventually getting,

(a-ai/2) + (b+2ib/5) = 9-3i

however, that doesn't seem to make the question any easier. and i'm not sure if multiplying the whole equation by 5 will solve the question. As it makes it just as complicated as it was in the beginning..so you guys, show me how to continue on or even better a quicker and easier method..if there is...thanks..ppl

2007-08-09 05:16:47 · 4 answers · asked by SSj4Monkey 1

Sunset rents an SUV at $21.95 plus $0.23 per mile. Sunrise rents the same vehicle for $24.95 plus $0.19 per mile. For what mileage is the cost the same?

2007-08-09 04:58:57 · 8 answers · asked by Anonymous

2007-08-09 04:38:24 · 7 answers · asked by Anonymous

please help me to find the inverse of this and check by composition of function.

f(x) = x-4/x

please show me the solution.. thank you all!

a

2007-08-09 04:34:03 · 4 answers · asked by xah8 1

An equation is being tested for symmetry with respect to the x-axis, the y-axis, and the origin. Explain why, if two of these symmetries are present, the remaining one must
also be present.

Thank you

2007-08-09 04:24:50 · 3 answers · asked by no idea 2

A Norman window has the shape of a rectangle surmounted by a semicircle of diameter equal to the width of the rectangle. If the
perimeter of the window is 20 ft, what dimensions will admit the most light (i.e. maximum
area).

2007-08-09 04:10:23 · 2 answers · asked by no idea 2

(13)
Can the graph of a rational function have both a horizontal and an oblique
asymptote? Explain.

2007-08-09 04:08:56 · 2 answers · asked by no idea 2

If anyone could explain how the following is done step by step, it would be greatly appreciated!

Find the volume of the solid that lies below the surface z = f(x,y) and above the region in the xy-plane bounded by the given curves.

z = 9 - x - y; y = 0, x = 3, y = (2/3)x

2007-08-09 03:44:42 · 2 answers · asked by Anonymous

I have a brainteaser that I need an answer for.
You have exactly 100 dollars to spend and you must buy exactly 100 head of cattle.
Bull are 5.00 each
cows are 2.50 each
calves are .10 each.
I need to know how many of each to buy to make eactly 100 dollars and have 100 animals.

Thank.

2007-08-09 03:29:23 · 5 answers · asked by Anonymous

I have a group project online to do and don't understand exactly what I am supposed to do. We have to create a new town named Luca with a population of 3,942. I have to graph the Growth Model by Radical Equation. Please Help! If you need additional information let me know. I really need this done!

2007-08-09 03:04:37 · 3 answers · asked by Anonymous

im a big procrastinator. its like 6 in the morning rite now and i have class in two hours. ive been looking over my notes and i got stuck on one parrt cause i dunno how i got my answer for that. its part of a question. so can anyone solve for the question mark:

.. pi/2-pi/3=?
..... 2*pi- pi/4=?

and tell me how u solved it plz

2007-08-09 02:07:26 · 5 answers · asked by xSELENEx 2

I need to write an essay on this. Thus, i need two applications. It will be great if you have more. Hopefully, you can give me suggestions on some not so complicated stuffs.

Lastly, thanks.

Reply me soon!

2007-08-09 02:05:28 · 10 answers · asked by Anonymous