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2014-09-11 08:32:20 -0600 edited question How can I include typeset mathematics in my posts?
Many questions I see have beautifully typeset mathematics. For example, instead of seeing something like integrate ...
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2014-07-16 20:58:32 -0600 edited answer Lagrange multipliers and their system of equations
Given the system of equations: $$ 2 - 2 \lambda x = 0 $$ $$ 4 - 2 \lambda x = 0 $$ $$ x^2 + y^2 = 20 $$ We can simply ...
2014-07-16 20:57:56 -0600 edited question Lagrange multipliers and their system of equations
On number 9 from the review sheet the question asks to find the extremes of $f(x, y) = 2x + 4y$ subject to $x^2+y^2=20$. ...
2014-07-16 20:57:16 -0600 edited question More matching of Groovy Plots and Functions
So I'm having a hard time determining the difference between plots $I$ and $II$. I know that they are both either $f(x,y ...
2014-07-16 20:56:18 -0600 answered a question Gradient of f(x,y)
The gradient of a function of $n$ variables is an $n$-dimensional vector. ...
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2014-07-10 12:57:28 -0600 edited question Tangent Planes, level curves, level surfaces
I understand how to plug things into the tangent plane lines, and to get the equations, however in class he said that th ...
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2014-07-10 06:16:07 -0600 edited question I'm lost on using the gradient for tangent planes.
Can someone list a step by step procedure for utilizing the gradient of some $f(x)$ to find the tangent plane to a surfa ...
2014-07-09 11:16:37 -0600 edited answer How do we draw the "left and right" contours of a hyperbolic function?
Hey so an easy way to show the graphs is by first putting the equation into wolfram and then copying the link and pastin ...
2014-07-09 11:14:56 -0600 edited answer How do I match the groovy equations with the groovy pictures?
I got b d e f c a ( Following the same order as yours, I can't figure out how to space them like you, and only h ...
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2014-07-08 05:49:53 -0600 answered a question Showing perpendicularity at every point?
This is a hard one, so here's my answer. Suppose that $\textbf{r}(t)$ is a vector valued function of constant magnitude ...
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2014-07-02 20:34:43 -0600 edited question How do I accurately visualize and describe level curves?
For the 14.1 homework tonight, many of the problems ask you to describe the level curves of the function. I understand h ...
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2014-07-02 11:44:36 -0600 edited question How to find the equation of a plane containing two lines?
On the Exam 1 Review sheet, question #13b asks to find an equation of the plane that contains the two lines p ...
2014-07-01 21:28:23 -0600 edited answer From Fundamental circular motion how do we get the tangent line when given t?
This is what I did for that problem, I'm not sure about it though: So, we need to fill out the equation $ \vec{p}(t)= \ ...
2014-07-01 21:23:42 -0600 edited answer Finding a value so that it is perpendicular to a vector
Christina: Normally I would leave this as a comment, but perhaps this means that there are no vectors that satisfy our r ...
2014-07-01 06:09:27 -0600 edited question Finding the cosine of the angle between two curves?
So, I've been trying to work on the homework 13.2, and I'm stuck on both questions 6 and 7. But we'll start with questio ...
2014-07-01 05:48:03 -0600 edited question How do I find the intersection of a sphere and an arbitrary plane?
It is very easy to find the intersection of a sphere and a plane like the $xy$ plane, but harder to find the intersectio ...
2014-07-01 05:31:12 -0600 edited answer The bug on the wheel goes round and round
I am in agreement with Tiffany up to a point. I am picturing the wheel spinning at 12 radians per second around the xz p ...
2014-07-01 05:29:41 -0600 edited answer The bug on the wheel goes round and round
Updated Answer I have changed the equation slightly to reflect cbass's answer. The coefficient inside the sinusoidal fu ...
2014-07-01 05:22:00 -0600 edited answer The bug on the wheel goes round and round
The problem says the the wheel is rotating at $12 \frac{rad}{s}$, with the center at the origin. Since the problem says ...
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2014-06-30 20:39:29 -0600 answered a question How do I find the intersection of a sphere and an arbitrary plane?
Very good question! And something like this is likely to be on the exam - so I hope ya'll figure it out!! ...
2014-06-30 20:38:05 -0600 answered a question From Fundamental circular motion how do we get the tangent line when given t?
I'm not sure that I understand the relationship between your two $\vec{p}$'s. Can you clarify? ...
2014-06-30 20:35:16 -0600 edited question From Fundamental circular motion how do we get the tangent line when given t?
So I know fundamental circular motion is $\vec{p} = \langle{\cos(t)},{\sin(t)}\rangle$ and we are given the equation: $\ ...
2014-06-30 20:33:21 -0600 answered a question Finding the cosine of the angle between two curves?
So, I cant add comments - but this looks great!! ...
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2014-06-22 21:25:03 -0600 edited answer What makes a good question?
Homework questions are definitely allowed on this site!! In fact, the major purpose of the site is to provide a place t ...
2014-06-22 18:58:01 -0600 answered a question How can I include typeset mathematics in my posts?
Typeset input is entered into AskBot using LaTeX snippets which is then rendering using a JavaScript program called Math ...