Mathematics - 16 August 2007

can some tell me if im doing it right please??

(i) int(4x^3-3\/```x - x^-1/2) dx
(ii) int(4x-3)^3 dx
(iii) int cosx / 3+2sinx dx

(i) int (4x/4 - 9/2 x - 1/2 x^1/2) + k
(ii) int (4(8x^2 - 6^2)^4 +k
(iii) i dont know how to go about doing this one can some help?

thanks bhavinp

2007-08-16 23:54:23 · 4 answers · asked by purejoker 2

How to solve these questions? I need formulae for colege entrance exams..:D

The sales price of a car is $12,590, which is 20% off the original price. What is the original price?

If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together?

2007-08-16 23:52:47 · 4 answers · asked by ~steffi~ 2

How do I find the f'(x) and g'(x) of x^3(3x^2+2x+1)^-1 ?
How do I find the f'(x) and g'(x) of 4x^2(2x^2+1)^2 ?

2007-08-16 23:22:58 · 2 answers · asked by delta_922002 2

Y = -9(x^2- 3x)^7?

Use the rules of differentiation to find the derivatives of the following function. Simplify terms wherever possible, but it is not necessary to factorise and then cancel any of the expressions.

2007-08-16 22:31:25 · 2 answers · asked by vanisha j 1

its so simple, but im SO confused by this one.. log base 8 (x)= -2/3. how do you solve that?? like in steps please..=)

2007-08-16 22:29:08 · 3 answers · asked by shortyyy_1o1 1

Use the rules of differentiation to find the derivatives of the following function. Simplify terms wherever possible, but it is not necessary to factorise and then cancel any of the expressions.

2007-08-16 22:27:06 · 2 answers · asked by vanisha j 1

1)AreAll real numbers a solution to the equation: 6x - 9 = -3(3 – 2x)

2)6(2x + 4) = 3(8 + 4x)

3)5x + 3(x - 2) = 4x - (x - 4)

4)-5(12 - 4x) = 8(3x + 9)

5)Absolute value equation:

|x + 3| - 4 = 12

2007-08-16 21:32:22 · 8 answers · asked by Anonymous

random?

2007-08-16 21:11:37 · 4 answers · asked by Sporadic 4

then a/c, b/a, c/b are in

2007-08-16 21:01:15 · 1 answers · asked by GANGUNDI V 1

2007-08-16 20:59:23 · 14 answers · asked by goth :) 1

&
xdy - ydx + logxdx = 0 at ( x = 1, y = 1)

2007-08-16 19:59:49 · 2 answers · asked by GANGUNDI V 1

2007-08-16 19:45:17 · 5 answers · asked by GANGUNDI V 1

How do you solve this problem for x: ax+bx=c. I'm doing my homework and I'm drawing a complete blank.

2007-08-16 19:04:10 · 8 answers · asked by Anonymous

(x+4)^(3/4) times (x+3)^(-2/3) minus (x+3)^(1/3) times (x+4)^(-1/4) all divided by [(x+4)^(3/4)]^2

how do you get rid of all the fraction exponents, what's the common factor?

2007-08-16 18:48:29 · 3 answers · asked by confused 2

y= 9 - x^2 closet to the point (3,9)

2007-08-16 18:25:17 · 3 answers · asked by Anonymous

1.) 5x + 7 = 3x + 21

2.) 3x - 2(5 - x) = -3(x - 10) + 3x

3.) 5(x + 1) = 3(2x + 3) + 5

2007-08-16 17:43:00 · 8 answers · asked by Anonymous

please explain

2007-08-16 17:22:02 · 5 answers · asked by jannel s 1

Show me the steps? thanks
4/7 = 6/c-6 - 8/c-2
Would I start out by finding a common denominator? Would the common denominator be c-42, is c-42 the same as -42c?
Oooooh I am confused.

2007-08-16 16:47:00 · 5 answers · asked by Boo Radley 4

2007-08-16 16:45:59 · 9 answers · asked by phoenixfighter00 2

I really nee dhelp with these few questions. i will really appreciate the help.

1. 120 is what percent of 80?

2. If the sum of two numbers is 20 and one of these numbers is twice the other, then the smaller number is ?

a. -20
b. 5
c. 7
d. 20/3
e. 40/3

Thank you.

2007-08-16 16:19:38 · 11 answers · asked by Anonymous

When we have sqrt(a^2 - x^2)

we say that adj = sqrt(a^2 - x^2) right?

so, what do we use with

sqrt(a^2+x^2)
and with sqrt(x^2-a^2) ???

2007-08-16 15:38:31 · 1 answers · asked by newbie4_z 1

A water tank has the shape of a cone. The tank is 10m high and has a radius of 3m at the top. If the water is 5m deep (in the middle), what is the surface area of the top of the water??

2007-08-16 15:28:24 · 3 answers · asked by redsox_04_champs 2

If I spent 27.5hours out of 40 hrs or 0.6875 of time on a project. what would be the correct fraction? I came up with 3/4 or 7/10. Help.

2007-08-16 14:56:46 · 5 answers · asked by Anonymous

2007-08-16 14:47:53 · 4 answers · asked by Anonymous

x^2-18x

2007-08-16 14:45:50 · 6 answers · asked by spiritmoonshine 1

I feel pretty stupid for forgetting how to graph y>x. Help please.

2007-08-16 14:32:33 · 3 answers · asked by Anonymous

a) common ratio?
b)expression nth term
c) show sum first 30 = 2 to the power of 26-4

2007-08-16 14:21:22 · 9 answers · asked by Anonymous

Andrea wants to go bowling early in the evening and then see a movie later. She has two kinds of bowling and four movies to choose from. In how many ways can Andrea spend her evening? It's a simple question, I know, but I need help plugging the numbers in the formula. - the proper way to go about solving it.

2007-08-16 14:20:26 · 3 answers · asked by Anonymous

1) Find the total surface area of a cylinder with radius 3 and height 8.

2) A sphere has area 64 pi. What is it's volume?

3) What is the volume of a cube with edge 2?

4) A rectangular solid with length 8 and width 3 has volume 28. Find it's height.

I have the answers but I just need it to be explained. Thanks!

2007-08-16 14:13:04 · 7 answers · asked by zxcvbnm 2

i can't find the patern.... 1,1,2,3,5,8,13,_,_,_

2007-08-16 14:10:33 · 12 answers · asked by ashley 1