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/sci/ Science & Math

Threads added between 2013/10/23 and 2013/10/30

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Most viewed threads in this category

At least one public class is required in main file

11 more posts in this thread. [Missing image file: Java.jpg]
Hello I found this code online and tried to execute it using compileonline.com , I tried other codes too, I always get this error: Error - At least one public class is required in main file no programming background so I have no clue, help? one of these codes static void FindMultiple() { long lcm=1; for(long i=2;i<=20;i++) { lcm=FindLcm(lcm,i); } System.out.println("Lcm="+lcm); }
22 more posts in this thread. [Missing image file: Zinc.jpg]
Why does taking zinc before bed cause extremely vivid dreams? I still can't find the answer to this, does anybody know? Go into the details please, I'm very interested.
76 more posts in this thread. [Missing image file: 1383080139015.jpg]
Was Einstein really a fraud?
5 more posts in this thread. [Missing image file: legal-math.jpg]
from my math lesson 3=x(e^5)-x 3=x((e^5)-1) what just happened? if you subract a factor (x) from said factor times logarithmic term, then it becomes -1? So if is would that imply that 3=x(e^5)-2x >>> 3=x((e^5)-2)? explain this shit
0 more posts in this thread. [Missing image file: help.png]
Chemfag here, I need help with this, I just want to be pushed into the right direction I am not sure how to do this.

Derivatives

5 more posts in this thread. [Missing image file: DERIVATIVES_OF_TRIGONOMETRIC_FUNCTI(...).gif]
I need help completing a simple derivative problem. I can't seem t find the correct answer that's on the test. The problem is as follows: Find the slope of the tangent line y=sec(x) - tan(x) at the point (0,1)
5 more posts in this thread. [Missing image file: Screen Shot 2013-10-23 at 7.50.41 PM.png]
Does anyone know what the 3k over k means?

Ask a PhD candidate in aerospace engineering anything

67 more posts in this thread. [Missing image file: images.jpg]
It's that time again... I know we did this a couple days ago, and normally I only do it every few months, but some folks had unanswered questions. I specialize in aerodynamics / computational fluid dynamics, so I'm most capable at answering questions tangential to those areas.

Skolem functions

9 more posts in this thread. [Missing image file: download.jpg]
In my AI text book, the following sentence: ?x[?y Animal(y) ? ¬Loves(x,y)] ? [?z Loves(z,x)] is skolemized as follows: ?x[Animal(F(x)) ? ¬Loves(x,F(x))] ? [Loves(G(z),x)] Why is G taking z as a parameter instead of taking x as a parameter? The text book says: The general rule is that the arguments of the Skolem function are all the universally quantified variables in whose scope the existential quantifier appears. ?z appears in the scope of ?x, so G should take x as a parameter.

Axiom of choice

12 more posts in this thread. [Missing image file: 1379885972990.gif]
From wikipedia: (...)The axiom of choice asserts the existence of such elements; it is therefore equivalent to: Given any family of nonempty sets, their Cartesian product is a nonempty set. But isn't it very easy to prove? If each set contains at least one element, then their cartesian product will contain at least the ordered set of these elements...
63 more posts in this thread. [Missing image file: image.jpg]
I am not much into science or anything but this seems like stupid misinformation. It was posted by some pseudo-hippie bullshit page. What does /sci/ think?
11 more posts in this thread. [Missing image file: 1334123186520.jpg]
I need some advice /sci/ I'm currently taking Biology I at USC using Campbell Biology. No matter how much I study I can't seem to regurgitated all the information from the readings and get an A on the tests. What are some methods other Biology majors/ premed used to do well? What are some good resources for Biology?
23 more posts in this thread. [Missing image file: 1383164322961.jpg]
i cannot sigh hard enough.
16 more posts in this thread. [Missing image file: E2670_Sulphurous_Antioxidant_Complex_90.jpg]
Do antioxidants have any real benefit?
40 more posts in this thread. [Missing image file: IMG20131003_184837_-1614238029.jpg]
Is the big crunch still possible?
13 more posts in this thread. [Missing image file: image.jpg]
Is Scientism reprehensible, or a force for good?
68 more posts in this thread. [Missing image file: Untitled.png]
Find D

Thermodynamics

2 more posts in this thread. [Missing image file: IMG_20131030_053548.jpg]
2 more posts in this thread. [Missing image file: conundrum.bronze.jpg]
n=0 n/n=0/n 1/1 = 0/1 1=0 if n = 0 then 0 = 0 0/0 = 0/0 (0/0)*0 = (0/0) *0 n/n = 0/n = 1/1 = 0/1 n/n = 0/n 1 = 0 (n/n) n = (0/n) n 1 = 1 nn/n = 0n/n = no solution exist 1= 0 or 0=0 = indeterminate or no solution exist. Is there any way to do this?
4 more posts in this thread. [Missing image file: 1382578285629.gif]
I have absolutely zero knowledge in the topic of how REM sleep works... but I'm a fan of theorycrafting and imagine the possibilities. That being said- What if we could some how induce an REM state without sleep? As in, being able to be in that REM state whilst walking around doing your daily routine. Perhaps using a device that externally stimulates the brain, or even just using a pill that provides the chemical precursor... Imagine having REM 'sleep' whenever you're feeling tired. Except it wouldn't be just like taking a scoop of jack3d or cup of coffee leaving you exhausted afterwards... it would be genuine restful 'sleep'. Except you're not actually asleep.






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