Mathematics - 29 September 2007

x^2 - 2 = 0

Please answer.

2007-09-29 23:57:34 · 6 answers · asked by luv 1

Question improper integral

1) Integrate(O to Pi) 1/( Squareroot x + Sinx)
use the direct comparison test

2)integrate(o to 3) 1 / (xsquare-11x+24)

Question integration

3) integrate sin(2x). lncosxdx
use integration by part

2007-09-29 22:57:12 · 2 answers · asked by bloodybastard88 1

lim (6^x - 7^x)/ (4x)
x->0

2007-09-29 21:20:45 · 2 answers · asked by sdt3 1

Any help with this question this would be much appreciated - I appear to be making it more difficult than it should be! Thanks!

Integrate:

x^2/x+1

2007-09-29 21:12:28 · 2 answers · asked by Anonymous

Let's say I've got a weird rotated scalene triangle. How do I calculate the area of this? Which leg is the base leg?

2007-09-29 20:47:40 · 7 answers · asked by Anonymous

ive searched on the net but on google its very scattered . of course i will have 2 do my projec on my own. but u can alease guide me.

2007-09-29 19:19:08 · 8 answers · asked by andromeda 2

this is the question please help.

f(a)=2a+3 oh and I need it worked out please

2007-09-29 19:04:02 · 8 answers · asked by OMNI G1 2

2007-09-29 19:03:15 · 5 answers · asked by Anonymous

???????????????????

2007-09-29 18:52:18 · 9 answers · asked by Anonymous

I just can't understand the topic. No matter how hard I practice I never seem to get it right. And now I have a 20 pts homework about it. I'll give one number, and please explain to me how the process works. And the solution of answer won't hurt either :)

Solve.

(1 + 2i) x + 3 - 2i = 4 - 5 + 3ix

2007-09-29 18:51:38 · 3 answers · asked by DaneFil 3

-3 6
2 -4


SINCE THOSE ARE THE NUMBERS and the the determinant equals zero ..is the the answer zero

2007-09-29 18:41:46 · 5 answers · asked by Anonymous

2007-09-29 18:39:35 · 10 answers · asked by Ariana P 1

Hi guys and gals, I had this question on my cal test and for some freakin reason I couldn't figure it out. If someone knows what to do, it would help for next time I guess.

integral dy/(y^2 - 4)

I'm guessing you use the integrate by parts thing..but I could be wrong.

Anywho thanks very much :)

2007-09-29 18:37:11 · 8 answers · asked by alexk 2

Hi, I don't quite understand how to do this question-(the 2.5% is kind of confusing me)
Help please :)

...You decide that accepting women within the top 2.5% height bracket will be reasonable for your competition. The height of all women follows a normal distribution with a mean of 168 cm and a standard deviation of 9 cm.

Calculate the cut-off height (C) that ensures only women within the top 2.5% height bracket are allowed into the competition.

2007-09-29 18:16:55 · 3 answers · asked by Anonymous

Two miles upstream from his starting point, a canoeist passed a log floating in a river's current. After paddling upstream for one more hour, he paddled back and reached his starting point just as the log arrived. Find the speed of the current.

I don't get it, how do I calculate it from this info?

Please be clear, thanks!

2007-09-29 17:41:36 · 2 answers · asked by teendeviant 3

Ok so im in pre calc 2 and have a test in a few day and cant figure this type of problem out!!!! My teach is really not alot of help.

it says find the exact value of each expression, with out using calculator
i under stand this problem...
(sin^ -1) (1) thats suppost to be read as inverse sin of 1. but i cant really type it right on here. but all you do is go to Sin= 1 on the unit circle and thats = to π / 2 (thats pi over 2)
i also get all the other ones like that but...

how do i do this one...
(sin^-1)((cos)(2π / 3)) i know the answer is -π/6 but how do i get that? Please explain!!!!!!! thank you so much

also other ones i cant solve but is the same way

(cos^-1)((tan)(3π/4))

Tan^-1 ( tan (7π/4))

Cos^-1 (cos(7π/6))

thank you for all the help you may provide! if anything simplify your explaination as much as you can lol thank you again have a great day

2007-09-29 17:17:08 · 2 answers · asked by It can only be me! 1

2007-09-29 16:56:33 · 2 answers · asked by Anonymous

2007-09-29 16:50:37 · 2 answers · asked by Anonymous

It's for science. I am so confused. Can someone help me out? Here's the first question:

___ Ca + ___ O2 ---> CaO

Ca = Ca =
O = O =

(The ____'s are blanks and the 2 is meant to be the, uh, "small two" Sorry I'm so untechnical.)

I'd love any help.

2007-09-29 16:47:16 · 5 answers · asked by Fuze 1

Which statement is true? Their perimeters are equal?
Their areas are equal? Or both?

2007-09-29 16:41:14 · 10 answers · asked by iluvbarbie115 2

If anyone could help me solve this problem, I'd be very appreciative! My teacher did not go over it in class and I'm very clueless... Thank you!

Find a formula that expresses the fact that P(x,y) is a distance 10 away from the origin.

2007-09-29 16:40:25 · 2 answers · asked by ragazza.chica.kella 2

Please help!

2007-09-29 16:38:46 · 10 answers · asked by iluvbarbie115 2

find an equation for the line with the given properties. Express the answer using the general form or the slope-intercept form, whichever you prefer.

Parallel to the line 2x -y = -2; containing the point (0,0)

can you explain how you solve this

2007-09-29 16:36:30 · 5 answers · asked by w s 3

find an equation for the line with the given properties. Express the answer using the general form or the slope-intercept form, whichever you prefer.

Parallel to the line y = 4x; containing the point (-1,2)

can you explain how you solve this

2007-09-29 16:35:15 · 6 answers · asked by w s 3

the given pairs of lines intersects. Find the point of intersection.

L: x + y = 5
M: 3x - y = 7

can somebody explain how you solve this

2007-09-29 16:30:40 · 12 answers · asked by w s 3

2007-09-29 16:28:53 · 2 answers · asked by Anonymous

2007-09-29 16:26:55 · 3 answers · asked by nala 1

2007-09-29 16:26:10 · 7 answers · asked by mztana820 1

A plane whose air speed is 150 mi/h flew from Abbot to Blair in 2 hours with a tail wind. On the return trip against the same wind, the plane was still 60 mi from Abbot after two hours. Find the wind speed and the distance between Abbot and Blair.

How do I calculate this?????Please be clear, thanks

2007-09-29 16:21:23 · 2 answers · asked by teendeviant 3

Please help me if you can. This is for a class I am taking.

2007-09-29 16:19:37 · 8 answers · asked by iluvbarbie115 2