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by buddy
Fri May 22, 2015 4:12 pm
Forum: Calculus
Topic: Is it possible to evaluate this integral without a calculator?
Replies: 3
Views: 33

Re: Is it possible to evaluate this integral without a calculator?

stapel_eliz wrote:
CollinR wrote:What I am wondering is if it is even possible to evaluate this integral without a calculator.

The result, from Wolfram Alpha, seems fairly unwieldy.
CollinR wrote:After this, I can just use integration by parts, correct?

After what? The answer from Wolfram?
by buddy
Sat May 16, 2015 8:14 pm
Forum: Intermediate Algebra
Topic: Simplify the following expression...how?
Replies: 3
Views: 44

Re: Simplify the following expression...how?

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 ...
by buddy
Thu May 14, 2015 4:07 am
Forum: Forum Rules & Guides
Topic: Basic LaTeX Guide
Replies: 6
Views: 43717

Re: Basic LaTeX Guide

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



looks OK now
by buddy
Thu May 07, 2015 12:55 am
Forum: Calculus
Topic: Differantiation
Replies: 1
Views: 102

Re: Differantiation

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 ...
by buddy
Tue May 05, 2015 8:16 pm
Forum: Geometry
Topic: Circle with 4 tangent circles
Replies: 6
Views: 5253

Re: Circle with 4 tangent circles

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...
by buddy
Tue May 05, 2015 8:14 pm
Forum: Intermediate Algebra
Topic: How to solve this function word problem step by step?
Replies: 1
Views: 126

Re: How to solve this function word problem step by step?

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 ...
by buddy
Fri May 01, 2015 8:21 pm
Forum: Uncategorized
Topic: Opinions on my math track
Replies: 1
Views: 87

Re: Opinions on my math track

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....
by buddy
Fri Apr 17, 2015 12:15 pm
Forum: Geometry
Topic: Squares into square
Replies: 1
Views: 4512

Re: Squares into square

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...
by buddy
Fri Mar 06, 2015 6:56 pm
Forum: Intermediate Algebra
Topic: gf(x) = g(x) ??
Replies: 1
Views: 251

Re: gf(x) = g(x) ??

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.
by buddy
Fri Mar 06, 2015 6:37 pm
Forum: Trigonometry
Topic: Table calculation doesn't match actual drawing dimensions
Replies: 1
Views: 231

Re: Table calculation doesn't match actual drawing dimensions

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?

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