- Sat May 16, 2015 8:14 pm
- Forum: Intermediate Algebra
- Topic: Simplify the following expression...how?
- Replies:
**3** - Views:
**36**

Before the "times", is it one of these? \left(-\dfrac{1}{9}\right)w^{-8} \dfrac{-1}{9w^{-8} What have you tried? Where are you stuck? Thanks. It is one of those Which one? and I am mainly confused on how to approach this in proper steps. To learn how, try here and here . Then try ...

- Thu May 14, 2015 4:07 am
- Forum: Forum Rules & Guides
- Topic: Basic LaTeX Guide
- Replies:
**6** - Views:
**43693**

This forum was choking on the LaTeX earlier. I'm checking that its good again:

looks OK now

looks OK now

- Thu May 07, 2015 12:55 am
- Forum: Calculus
- Topic: Differantiation
- Replies:
**1** - Views:
**94**

Hi can you please find the derivative of this equation for me erespective of x ye^(sin x) =x e^(cos y) all i know is that i have to introduce 'ln' to bring down the powers,then from there i dont know how to deal with the whole thing. Do the logs. Then do the Chain Rule and implicit differentiation ...

- Tue May 05, 2015 8:16 pm
- Forum: Geometry
- Topic: Circle with 4 tangent circles
- Replies:
**6** - Views:
**5241**

Is it possible to draw a large circle containing 4 smaller tangent circles of equal size, without doing any math? ie. can you find the centres of the smaller circles by somehow drawing intersecting lines? What do you mean by "without doing any math"? Can you not use a compass and straight...

- Tue May 05, 2015 8:14 pm
- Forum: Intermediate Algebra
- Topic: How to solve this function word problem step by step?
- Replies:
**1** - Views:
**122**

Suppose the 2006 average retail price P (in dollars) for an n-year old car can be modeled by the function P = 22,667 - 1756n, where 0 < n < 4 What was the average retail price of a 4-year-old car in 2006? They gave you a formula for the average price P in terms of the age in n years. You are asked ...

- Fri May 01, 2015 8:21 pm
- Forum: Uncategorized
- Topic: Opinions on my math track
- Replies:
**1** - Views:
**83**

Different schools teach different stuff from different books and in different ways in similarly-named courses. What you need, and what your degree field wants, is something only you and somebody familiar with your school can decide. There's really no way for people outside of your situation to know....

- Fri Apr 17, 2015 12:15 pm
- Forum: Geometry
- Topic: Squares into square
- Replies:
**1** - Views:
**4510**

Let ABCD be a square, |AB|=2. Let EFGH be a unit square included in ABCD (every point of EFGH is inside ABCD). If O is the center of ABCD, is it possible for O to stay outside EFGH? You can see a suggestion of a proof here . You can see some hints about proving it here . If you have other questions...

- Fri Mar 06, 2015 6:56 pm
- Forum: Intermediate Algebra
- Topic: gf(x) = g(x) ??
- Replies:
**1** - Views:
**241**

Cedric0303 wrote:Given f(x) = x/2 +1

g(x) = x^2 -1

Find gf(x) = g(x) ?

Does "gf" mean "g times f" or "g compose f"? Thanks.

- Fri Mar 06, 2015 6:37 pm
- Forum: Trigonometry
- Topic: Table calculation doesn't match actual drawing dimensions
- Replies:
**1** - Views:
**227**

annesthetized wrote:How come a calculation worked through trig tables doesn't exactly match the actual drawing dimensions?

Without knowing what the calculations,etc, were, it's hard to say. Maybe round-off error?

- Fri Mar 06, 2015 6:35 pm
- Forum: Trigonometry
- Topic: Alterations to sine wave calculations
- Replies:
**2** - Views:
**1817**

...I was wondering if there were any more alterations I could make to this calculation. To explain I've made an image. http://i760.photobucket.com/albums/xx243/i84cookie/sinewaves.png So the top graph shows what a sine wave looks like over time, the bottom shows roughly what I'm trying to achieve u...