Mathematics - 14 September 2007

Find a formula for the inverse of the function.

y = (e^x)/(1+8e^x)

2007-09-14 09:09:42 · 4 answers · asked by ILuvTaraReid 2

I dont really need the answers here but could someone please explain the process in which the question can be done.

let x be a number that is selected randomly from the closed interval from 0 to 1 [0,1]. use your intuition to sign values to:

a) P({x: 0 <= x <=1/3})
b) P({x: 1/3 <= x <=1})
c) P({x: x = 1/3})
d) P({x: 1/2 < x < 5})

2007-09-14 09:02:26 · 2 answers · asked by Anonymous

Can you solve the problems below and explain how you did?

1 - 8x^3 x 3y^2 divided by 6x^2 x 4y^3

2 - (6x divided by 18x^2) ^2

2007-09-14 08:56:13 · 10 answers · asked by Kess 2

3 + 2i
--------
3 - 2i.

its a fraction. please help

2007-09-14 08:53:29 · 4 answers · asked by K Rose 3

lim [(1^x) / (1^x)]
x-->∞

1, indeterminate, or neither?

2007-09-14 08:50:45 · 7 answers · asked by whitesox09 7

I Ix - 3I - 9 I = 2
I don't know how to do this problems like this with periods I don't know how to say to this I in english Is period good . And also show me how to do this problem.

2007-09-14 08:49:23 · 3 answers · asked by dragoi_stefan06 2

limit |x|
x->0 __
x Why does it not exist? what about as x-> infinity?

2007-09-14 08:44:27 · 6 answers · asked by Chris C 2

3, 4, 7, 12, 19

2007-09-14 08:37:48 · 8 answers · asked by Dilara 2

HOW IN THE WORLD DO YOU DO THIS PROBLEM???

2007-09-14 08:32:43 · 4 answers · asked by Anonymous

A curve has parametric equations x= ln (cot x/2) - cosx and y=sinx.

Show that dy/dx= - tanx

Show ur workings plzzzz

2007-09-14 08:30:29 · 1 answers · asked by Mehn 3

Let D be a subset of R^n and suppose all the partial derivatives of f:D --> R exist and are bounded on D. Show that f is Lipschitz on D.

I could prove this for the real line, but got confused in this more general context.

2007-09-14 08:28:45 · 2 answers · asked by Anonymous

Let X and Y be topological spaces. Suppose Y is Haursdorff and let f and g be continuous functions from X to Y. Suppose f and g agree on a subset D of X, dense in X. Show that f(x) = g(x) for every x in x, that is f = g.

I could prove this when X and Y are metric spaces, but here we have a general case.

2007-09-14 08:20:40 · 2 answers · asked by Anonymous

x=3sin y
dx/dy in terms of y is: 3 cos y
hence show dy/dx= 1/(9-x^2)^1/2
and also find a function of x with this derivative?

im not sure how the answer of dy/dx is found though eliminating the trig expressions, logical steps with explanation would be great. thanks :)

2007-09-14 08:17:51 · 4 answers · asked by Anonymous

2007-09-14 07:53:43 · 13 answers · asked by bkprincess 2

twelve divided by the sum of x and 2 equals the quotient of 4 and the difference of x and 2. Find x.

2007-09-14 07:40:37 · 9 answers · asked by gladdo19 1

Instrument transformers: a) How is an instrument transformer characterised? Give an example for each category. b) What has to be done to avoid that the power is transferred? c) Why is it concerning the currents necessary to measure high overcurrents, but not concerning the voltages necessary to measure high overvoltages?

2007-09-14 07:38:10 · 1 answers · asked by Naveen C 1

It says to find the domain and range of the function.
f(x)= 9-x^2

2007-09-14 07:37:26 · 3 answers · asked by vanmeterashley 1

and anybody who would please tell me how many ounces are in 1.5 litres. I would appreciate it!

2007-09-14 07:10:35 · 8 answers · asked by Anonymous

absolute value... can you please help me with this one? thaks

2007-09-14 07:08:06 · 7 answers · asked by mibg 1

A mechanic buys $14.56 worth of parts from a supplier. If he pays for the parts with a $20 bill, how much change will he receive?

A. $5.44
B. $5.56

C. $6.44

D. $6.56

2007-09-14 07:05:47 · 15 answers · asked by Meggan t 1

the answer is y=3x+7. I need to know how to get the answer. ten points to who can explain it! Thank you!

2007-09-14 06:31:55 · 6 answers · asked by Sandy 4

please help.

1/3 + x = 3/4

2007-09-14 06:28:14 · 12 answers · asked by MMN 4

2007-09-14 06:04:38 · 3 answers · asked by Robbie B 2

Manuel is preparing to run in a race. He has developed a training program in which he increases his running distance each day. If he continues to follow the same pattern, what distance will he run on the fifth day.

Day 1 - 1 mile
Day 2 - 2 miles
Day 3 - 4 miles
Day 4 - 7 miles
8 miles
9 miles
11 miles
14 miles

2007-09-14 05:24:41 · 7 answers · asked by Marcela M 1

12(-8+-4)=

2007-09-14 05:07:51 · 5 answers · asked by nancy o 1

2007-09-14 05:02:52 · 4 answers · asked by jojo l 1

2007-09-14 05:02:25 · 6 answers · asked by missy73 1

Find all roots of the polynomial P(x) = x^ 4 + 9.

a. (±√ 3 ± i √3)/2

b. (−√ 6 ± i √6)/2

c. ± √3i and ±√ 3

d. (± √6 ± i √6)/2

e. (± √3 ± i √6)/2

2007-09-14 04:54:30 · 2 answers · asked by Anonymous

(continuation)
How old was each when they got married?

2007-09-14 04:33:34 · 7 answers · asked by nutellafella 1

The length of a rectangle is ten inches longer then twice the width. If the perimeter of the rectangle is 344 inches, how do I find the dimensions?

2007-09-14 04:26:36 · 9 answers · asked by k_artiaco 1