Justin's profile - activity

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2014-07-31 14:20:22 -0600	received badge	● Nice Answer (source)
2014-07-31 12:43:04 -0600	answered a question	Partial derivatives I would just like to add that the intuitive reasoning for finding $\frac{\partial P}{\partial y}$ and $\frac{\partial Q} ...
2014-07-31 06:41:11 -0600	received badge	● Good Answer (source)
2014-07-31 06:38:13 -0600	received badge	● Nice Answer (source)
2014-07-30 19:20:51 -0600	answered a question	Section 16.3 Since nobody seems to be answering, I'll try to lend a hand! This problem is just a cleverly cloaked version of the prob ...
2014-07-30 18:17:45 -0600	answered a question	Number 6 on Exam 2 I'll take a stab at answering this, although I admit that I missed this on the exam as well! Here is what the question b ...
2014-07-30 16:08:16 -0600	received badge	● Nice Answer (source)
2014-07-30 15:41:14 -0600	answered a question	Exam III review sheet I agree with Wes about almost everything that he did. However, when I compute the cross product, I obtain the vector $\l ...
2014-07-30 06:57:05 -0600	received badge	● Nice Answer (source)
2014-07-29 11:09:58 -0600	answered a question	Section 16.2 I believe that to solve this problem, you must set up two separate parametrizations and two separate integrals. The firs ...
2014-07-28 07:11:20 -0600	received badge	● Nice Answer (source)
2014-07-25 13:40:06 -0600	answered a question	Question #2 on quiz I agree with Gear Junky. I believe that zero is the correct answer. I would like to offer a geometric perspective on thi ...
2014-07-24 06:39:59 -0600	received badge	● Nice Answer (source)
2014-07-23 19:01:28 -0600	answered a question	Spherical and cylindrical problems I agree with Mr. Spiff, except for one thing. I believe that the integral should be: $$ \int_0^{2\pi} \int_0^{\pi/4} \i ...
2014-07-23 09:05:49 -0600	received badge	● Guru (source)
2014-07-21 07:00:32 -0600	received badge	● Nice Answer (source)
2014-07-21 06:43:48 -0600	received badge	● Great Answer (source)
2014-07-19 10:42:48 -0600	received badge	● Good Answer (source)
2014-07-19 02:14:33 -0600	received badge	● Nice Answer (source)
2014-07-18 16:12:06 -0600	answered a question	Post-test analysis I don't remember the problem exactly, but I believe it went something like this: Find all maxima of the function $ f ...
2014-07-18 06:44:45 -0600	received badge	● Good Answer (source)
2014-07-18 06:42:22 -0600	received badge	● Good Answer (source)
2014-07-17 16:54:26 -0600	received badge	● Nice Answer (source)
2014-07-17 16:37:54 -0600	received badge	● Nice Answer (source)
2014-07-17 16:23:23 -0600	answered a question	Directional Derivative equal to 10 Take a look at my answer to a previous question. Update/Comment: Thanks Christina! I think you explain things wonderful ...
2014-07-17 13:28:30 -0600	answered a question	Partial derivative Hm, I'm not completely sure about how you took your derivatives, but let me show you my steps for using the product rule ...
2014-07-17 07:10:39 -0600	received badge	● Good Answer (source)
2014-07-17 07:02:14 -0600	received badge	● Nice Answer (source)
2014-07-17 06:59:55 -0600	received badge	● Nice Answer (source)
2014-07-17 06:26:11 -0600	received badge	● Nice Answer (source)
2014-07-16 22:07:45 -0600	answered a question	Is this sound reasoning? Although I am not 100% sure about this, your argument sounds very reasonable to me; I put that the integral would be pos ...
2014-07-16 20:04:41 -0600	answered a question	Lagrange multipliers and their system of equations Given the system of equations: $$ 2 - 2 \lambda x = 0 $$ $$ 4 - 2 \lambda x = 0 $$ $$ x^2 + y^2 = 20 $$ We can simply ...
2014-07-16 14:25:15 -0600	edited answer	Tangent Planes, level curves, level surfaces I am not completely sure of my answer to this, but I will take a stab at part (c) of this problem. Let us first create a ...
2014-07-16 14:20:34 -0600	answered a question	Exam 2 Review Sheet I agree with Tiffany regarding $\nabla f(2, 1) = \langle 1, 6 \rangle$. This is actually the only piece of information t ...
2014-07-16 06:39:34 -0600	received badge	● Nice Answer (source)
2014-07-15 20:48:00 -0600	answered a question	How to evaluate the intersections of the restriction functions Without giving too much away, I think it might be beneficial if you set the two constraint curves equal to each other. I ...