English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

Mathematics - 22 October 2007

[Selected]: All categories Science & Mathematics Mathematics

find the derivative:

y= (1/9)Cot(3x-1)



help!

2007-10-22 05:05:41 · 10 answers · asked by Katie 4

z answer is -0.197+0.09i

2007-10-22 04:57:40 · 2 answers · asked by yuft 2

because of lack of promotion, the yearly sales S of a product decline according to the equation S(t)=3000e^-0.80t where t is the time.

Find:
a. the rate of change of sales with respect to time.
b. the rate of change of sales at t=0.5
c. the rate of change of sales at t=2

2007-10-22 04:53:26 · 2 answers · asked by tsLow 1

find the slop of a tangent line at the indicated point. write an equation fot the tangent line.

x^2-y^2=1 at (3,1)

2007-10-22 04:48:34 · 4 answers · asked by tsLow 1

Can anyone show me the steps in solving this?

log base 2 (3-x) + log base 2 (2-x) = log base 2 (1-x)

Thanks

2007-10-22 04:47:17 · 6 answers · asked by Oztac 1

dy/dt sq.rt.(1+ sq.rt(t))

it looks a whole lot easier if you write it down how it says too.

pleeeaassee help thank youuu

2007-10-22 04:43:01 · 4 answers · asked by Katie 4

For a 1D integral over a symmetric interval we have
Int(f(x),x = -a..a) = Int(f(x),x = -a..0) + Int(f(x),x = 0..a)
Now break up the double integral similarly:
Int(Int(f(x,y),x = -a..a),y = -a..a)
The first one to get the correct expansion get 10 points.

2007-10-22 04:40:26 · 3 answers · asked by 1,1,2,3,3,4, 5,5,6,6,6, 8,8,8,10 6

What geometric postulate justifies the statement?
If AB is congruent to CD and CD is congruent to EF, then AB is congruent to EF.

Thanks!

2007-10-22 04:38:34 · 2 answers · asked by Kracker 2

2007-10-22 04:38:07 · 12 answers · asked by Anonymous

b^4+13b^2+36=0

2007-10-22 04:33:10 · 7 answers · asked by mormar 1

I have a parallelogram with horizontal side = 100, and vertical side = 150. Is there any way to determine the height?

2007-10-22 04:28:09 · 3 answers · asked by Rob J 1

Consider series of squares 1, 4, 9, 16, 25... The differences are 3, 5, 7, 9... which leads to differences of 2, 2, 2, 2... = 2! The series of cubes 1, 8, 27, 64, 125... similiarly ends up with 6, 6, 6, 6 ... = 3! Etc. It always ends up with n!, n!, n!,.... where n is the power of the original series.

2007-10-22 04:26:05 · 2 answers · asked by Scythian1950 7

2007-10-22 04:23:47 · 4 answers · asked by Flamezz 5

0

im doiin math homework
and im doiin combinations

and theres this one problem c[9,2]

i got 1/560


buhh i dont kno
wut u thiink?

thanks babe

2007-10-22 04:19:21 · 2 answers · asked by cutejaz18 1

2007-10-22 04:15:33 · 5 answers · asked by Anonymous

2007-10-22 04:01:00 · 6 answers · asked by trice20019 2

Minimizing cost- A company uses the formula c(x)= 0.02x-3.4x+150 to model the unit cost in dollars for producing x stabilizer bars. For what number of bars is the unit cost at its minimum? What is the unit cost at that level of production?

I have no clue, someone please help me thankyou

2007-10-22 03:48:44 · 6 answers · asked by mormar 1

A bag contains 3 blue, 4 red, and 2 green marbles. What is the probability of selecting one green marble from the bag?

2007-10-22 03:33:57 · 7 answers · asked by Sweet*Angel 3

The Length of the latus rectum is the square root of two and the eccentricty is 4. Any suggestions on how to solve it?

2007-10-22 03:12:20 · 4 answers · asked by Scarlet Mist 2

w2=-225
w² = -225
w² + 225 = 0
w² + 15² = 0
w² - (15i)² = 0
(w+15i)(w-15i) = 0
w = {-15i, 15i}

2007-10-22 02:41:06 · 6 answers · asked by mormar 1

im having troubles finding the value of this function WITHOUT USING A CALCULATOR sin(cos-1(-1/sqrt6))
thanks to all that help

2007-10-22 02:24:46 · 6 answers · asked by greenie23510 1

2007-10-22 02:00:35 · 3 answers · asked by Anonymous

1. the base of a solid is the region in the xy plane bounded by the
parabolas y=x^2 ans x=^y2. find the volume of the solid if every cross
section perpendicular to the x-axis is a square with its base in the
xy plane.

2. given y=x^5 - 4x^3 + 5x
a. locate the exact or approximate intercepts
b. identify any axis of symmetry
c. determine the curves behavior at positive and negative infinity
d. use the first and second derivative to locate turning points

3. find the area common to r=1+cos@ and r=3^(1/2) sin@

4. specify the points of intersection of rcos@=1 and r=4cos@

5. tnagents are drawn to the ellipse x^2/a^2 + y^2/b^2 =1 and the
circle x^2 + y^2 = a^2 at points having the same abscissa. prove that
these tangents cross OX (a-axis) at the same point.

6. find the volume generated by rotating the region bounded by
(x-1)^2 + (y-2)^2 = 4 around
a. x axis
b. y -axis
c. x = 3
d. y = 4

[Difficulty]
I need help in one and five a lot!!

2007-10-22 01:00:47 · 1 answers · asked by oman_manalang 1

fedest.com, questions and answers